I'm not leaning towards any brand in particular, I loved my pletty in the last revo, and found it to be pretty fast, cost doesnt matter just looking to buy one motor without regrets. Also, making something fit doesnt bother me either, part of my build plan is to make a carbon fiber motor mount, so I can change things up from there.
I ( just ) managed to fit a 1521/1D in my E-Revo. That would definitely get you to 100mph if you take things one step at a time. If you've not too concerned with fitting into the standard revo chassis / layout then a 1527/1D would be ya baby. There are various other motors available that would work nicely for you, specifically from Tenshock and Leopard. TBH, I wouldn't bother looking any further than those three.
Shoot me a PM an' I'll try to help you avoid too many expensive mistakes.
Also, making something fit doesnt bother me either, part of my build plan is to make a carbon fiber motor mount, so I can change things up from there.
Unless you want to raise the motor up above the rear shocks - or make an extended chassis - you are somewhat limited on motor length. That's all I was saying.