Ammo motors for dual brushless set up?

[Topspeedtimmy]

I've decided I want to utilize my dual motor mount E-maxx transmission in my Revo while still use my VXL controller.
So the plan is to get another VXL and then get two motors to go along.
I want to get two motors for under $140. I have it pretty much narrowed down to:
2 Velineons
2 Ammo 36-56-2600

Feiago L motors might be a little to costy with the heatsink clamps added into the price. These are going to run on 3s. The Ammo motors would be cheaper, as they are $35 a pop at Tower. Seems too cheap. Would they hold together? It looks as though they don't have any screws holding them together.
Dual Velineons would be fast geared 19/62. Wanted to know if I would be able to get comparable speeds if I geared up the larger ammo motors.