I am officially a Hyper man. I just ordered the Hyper 8.5 buggy with the new 2008 STS S21T engine. The engine is being sold at nitrocountryrc.com for $189. Most of the parts are interchangeable between buggy/truggy.
http://nitrocountryrc.com/bthe-race-...1b-p-1506.html
same here, actually the hyper 7 is closer to the hyper st, same bulkheads and shock towers. i have a set of carbon fiber hyper 7 shock towers ordered (if they ever get here) that are 5mm thick and should fit perfect. but you can use the 8.5 c-hubs and get the camber options on the st, with the 18 degree the truck actually turns more and the push seems to be gone. good luck.