I think I will go ahead and share my conversion with you guys. I bought a revo 3.3 roller off ebay that had the tekno battery tray, tekno servo mount, and rc-monster motor mount installed. The tranny was already locked into 2nd and I added a custom 1/8th center diff inside. For electronics I am using an MGM16018 with a Neu 1515/2.5D on a single 5000maH 6s lipo. It has tons of power and can easily probably last 25min on a single charge.
In my opinion I would much rather a conversion than the new e-revo mainly because the center diff and easy access to a single battery on one side where I can charge it without even removing it from the vehicle.
I will probably start a thread on my conversion soon. It will have more detail and pics of my revo but I want to completely get it finished to how I like it first.
Here are some pics so you can get an idea of where I placed everything:
