If you are looking for a setup that has proven itself on the track and dont want to break the bank i would use the stock sub and buy all the ridetech components. The ridetech 48 hour camaro drives very well and has all their suspension components with a stock subframe (no seam welding) and no subframe connectors. With their tru turn system you can run a 10" front wheel and with a little work and packaging you can get a little more under it if you want.
http://www.ridetech.com/store/1967-1...m-level-2.html
kevin miller