As clever as (the other) contributors to this site might be, you would be well-advised to get and read a copy of the SCCA GCR (competition rules) before you start your project. It is WAY too easy to take others' advice, potentially getting yourself into a legality bind. Go to http://www.scca.org/news/index.html#comp_regs to find out how to order a copy. Unfortunately, this document is not available on line...

Best of luck with the project!

Kirk Knestis
Charlottesville, VA