I spent alot of time deciding which truggy to convert and settled on the 8ight-t for a couple of reasons.
First of all Losi parts are available in most LHS, and enjoy more aftermarket support.
Second, HUGE shocks. they look cool and work great!
Third and most important Losi put the center diff way over on the right side of the chassis. This allows the battery to sit much closer to the center of the chassis. 4s battery packs are HUGE!!
This guy has an awesome write-up for the 8ight:
http://industrialstrengthscience.blo...onversion.html