Revo spur/ E-Revo Kit Questions

[GorillaMaxx360]

(Post 500) thanks so is there anything you recommend replacing besides what you listed to have a race ready/bashready revo(for examlple on the maxx it was the steering servo it cam with) i mean on the roller any part on the roller that just plain it horable and needs to be replaced. Also is there a huge difference in performace between the g1 speed conversion and the slipperential(becides weight and lower cg). Thanks