Buy the SCCA Solo II rule book before you buy anything. You chould buy parts like control arms or sub frames that arent Ford factory options and end up in a mod class getting spanked by real race cars! For non-Saleen Mustangs your only real choice whould be Cobra R parts. In street perpared class springs, struts, shocks, and bushings are open but almost everything else has to be an option available on any year or model Mustang (except Saleen for non-Saleen cars). These have to be exact parts not aftermarket copies. | 
Autocross Suspension - Where to buy from? 
