Hey Mulv, if I had a potent SB stroker and some 17" rubber I would take you up on your offer.
I've driven a stock GT Stang and it didn't impress me much. I've also watched guys (in SB SPF's) dust stock Mustangs all day long at different tracks. I've never had my SPF on a road course, but I've driven my buddy's Noble on one. -Now THERE'S a car that can handle.
I constantly dust my brother-in-law in his pumped up CTS-V with no problems (racing around Chicago highways)...........does that count?
As far as the SPF's Doug Reed and Dennis Olthoff drove, I don't recall any major upgrades over stock on those vehicles. I believe Olthoff's car had the upgraded anti-roll bars (thicker) as well as Olthoff's (now famous) Bilstein upgrade - both of which are available for SPF owners from the Olthoff's.
If Steven's buddy want's a car for racing on a road course, then IMO, he shouldn't be looking at ANY Cobra replica's (except perhaps JBL). If I were him, I would concentrate on a Noble or a Brock Coupe. If he's sold on the "look" of a Cobra, then he can't go wrong with any of the replica's mentioned by ALL of us on this thread. -At that point he just needs to figure out if he wants to build it himself, or have a roller delivered to his door.