Hey guys, need some advice. I have an Evo 4 that I can't sell, so I've decided to just build it. What are the essential hop-ups for it (Besides the aluminum rear hubs, I have those already). Looking at speedtech.com, looks like there's 1-piece lightened front and rear input shafts, the MS bulkheads/gearcases, and the aluminum one-way gear. Anything else?