Heres my rc10gt, the hop-ups as follows:
Custom front and rear bumpers, custom front and rear shock towers, custom tranny brace, custom front body post mount, and custom wheelie bar, 3 black rims, 4 dirt hawgs, 4 masher 2000's not seen, all red springs, 40 wt. shock oil, all rpm a-arms and receiver case, all new ball cups, plastic dipped Hitec dual ball bearing metal geared steering servo, Futaba 2pl system, Os .18 cvr converted to drill start, tuned pipe, exhaust deflector, new fuel line, all metal tranny and metal spur gear, MIP clutch, 1000mah receiver battery, Fuel filter, new tranny case, cvds, light flywheel, All ball bearings, a throttle return spring, and the best hop-up that doesn't cost anything is a good 14 hour thuro cleaning. I cleaned every part and even soaked and rinsed the screws.