That's about all it really takes! I have a bumper and body mounting kit that bolt on with no mods needed. They only thing that I would think about doing is possibly putting on Big Bores if you don't already have them. Otherwise the stock RC8 is fine. Here's the link:
AE RC8 Oval Conversion Kit...
In the middle somewhere is a picture of my RC8 LM, and at the end is a picture of the kit. They are $75 shipped, and I also have (1) C&M Late Model Body that I could sell as well for an additional $40. Let me know if you want a kit, I have (5) left.