Real 1,
The spec racer kit goes for $13,990. Spec racers have a lot of limits as too what you can do to the car and still race in the spec racer series.
After this add the cost for the donor car/pallet/crate engine and parts plus wheels and tires and paint. You're talking somewhere close to $20K for a race car.
You'll have to accept the fact that you can't run an IRS setup, you have to have a 302 in it.
Here's a link for schedule
http://www.factoryfive.com/table/sho...schedule02.htm
And here's one for rules
http://www.factoryfive.com/table/ffr...03rulesV12.pdf
TAZ