Ronnie Moore may tinker with the side which fired Rotherham into the final - with Josh Walker replacing Danny Harrison or Pablo Mills in midfield.
"It will be the same 18 but I might make one change," said Moore.
Rotherham beat Aldershot 3-0 over two legs in the semi-final, but the Millers boss is still looking for an improvement.
He said: "We've had two great wins against Aldershot but I'm thinking of the bigger picture.
Daggers deserve tilt at Wembley glory - Arber
"Maybe we can get someone in there who can get hold of the ball and pass it a little bit."
While Moore considers a change, Dagenham boss John Still insists it will be business as usual for his side at Wembley.
He told BBC Essex: "We're just going to go and play the Dagenham way.
"I hope the pitch is big and I hope it's tiring, because the team that is playing us doesn't half have to run. They'll have to work their socks off.
"Every week we play it's a big game. We play Rotherham and we think 'that's a big game', we play Crewe, we think 'that's a big game'.
"So we play big games all the time and it's never phased us, to the point where one or two managers say 'I don't really want to play Dagenham'."
Head to head
• Dagenham & Redbridge have never beaten Rotherham.
• This is their first ever meeting outside a regular league fixture.
• They first met in October 2007. The Millers have won four and drawn two of their six clashes, including the double this season; 2-0 at the Don Valley Stadium on 9 February, and 1-0 at Victoria Road on 13 March.
DAGENHAM & REDBRIDGE
• This is Dagenham's first visit to Wembley as a professional club.
• They qualified by virtue of a 7-2 aggregate victory over Morecambe in the semi-finals. Their 6-0 home win in the first leg was a play-off record.
• Chasing a first ever promotion in the Football League.
• Finished in seventh spot, the highest in their history, but the lowest placed of the play-off clubs, two places and one point inferior to Rotherham, despite scoring 14 more goals (69 to 55).
• The club finishing as low as four places below the automatic promotion spots has gone on to win promotion to the third tier only once; Blackpool in 2001.
• Won five of their last seven games.
• John Still was in charge of the Barnet side that lost Division Three play-off semi-finals to Colchester in 1998 and Peterborough in 2000.
• Paul Benson is the club's top scorer with 21 goals, three of which were scored in the play-off semi-finals. Josh Scott scored four of his 16 goals this term, in the first leg against Morecambe.
• Tony Roberts and Danny Green have been ever-presents this season, appearing in all 51 of Dagenham's fixtures.
ROTHERHAM UNITED
• The 1961 League Cup runners-up are making only the second visit to Wembley in their 140-year history. The first was in 1996, when they beat Shrewsbury 2-1 to win the Auto Windscreens Shield. Nigel Jemson scored both Rotherham goals.
• Qualified for this final by beating Aldershot 1-0 in Hampshire, and 2-0 in South Yorkshire.
• Spent three seasons in League Two since relegation in 2007, and not experienced promotion since arriving in the second level in 2001.
• Won just four of their last 11 competitive matches, with clean sheets in all four victories.
• Knocked out at the semi-final stage in each of their last two excursions into the play-offs. They lost to Swansea in the Division Three-Four play-offs in 1988 (1-2 on aggregate), and they fought out two goalless draws with Leyton Orient, losing on penalties in the Division Three play-offs, 11 years later.
• Ronnie Moore was in charge of Rotherham in 1999; his only previous experience of the play-offs as a manager.
• As Rotherham have done this term, Gillingham finished fifth last season and won promotion to League One through the play-offs. They were only the fourth club in 19 years to go up in this way having finished two places outside the automatic spots.
• Leading scorer, Adam Le Fondre, who netted in both semi-finals with Aldershot, has scored 30 goals. He is the second highest scoring League Two player.
• Gary Warrington has kept goal for all of Rotherham's 54 competitive matches this season.
• If he scores, Andy Liddell will take his career total of club goals to 150.
Source: BBC Sport
Source: BBC Sport