This is the "Wall O' Parts". Everything you need is here. Hop-up parts from BSRT and Wizzard, original replacement parts from Aurora, Tomy/AFX, Tyco, Life Like, as well as other stuff like JB's ThunderBrushes, Parma controllers, and all the parts to build a chassis from scratch. Joe also makes a custom Parma controller mod that has a 3-position switch to run at 60/45/35 ohms. I think there are other ranges as well. And it's only $42.

Oh! Don't forget about tires. Nostalgia Hobby has silicone tires to fit just about any hub you have. The compound is fantastic (even when dirty)!

There are more parts on the adjacent wall, but it wouldn't fit in the picture!