The stock revo mount is the same size as the emaxx's. I would suggest getting a single motor plate @ cover for it. Again, yes it will be able to roll it forward but a MM and a 1509 are not a good choice for large trucks like these. If you have the $$$ then I would purchase a MMM combo or with a Tekno Nue then it will fly with no problems. If you do chose the MM with a 1509, watch the temps carefully. Since you are interested in the MM esc in a revo, take a look at this:
http://therccarblog.com/2008/07/29/t...ildup/#more-17
Cheers!