The "secret" to our Ghia's success is simplicity. No MSD, no fuel injection, stock torsion bars front and rear, steel wheels, stock Varga (ATE copy) brake calipers and generic stock rotors front and rear. We ran the Pace Grand Prix on a 1699cc engine, AA hypertech 85.5mm pistons, and a 10-year old pair of AJ Sims heads. 9:1 compression.
Where we get racy is our dry sump oil system from CB Performance, Hoosier Speedster racing rubber (bias ply), Porterfield carbon Kevlar brake pads, Koni shocks (set to medium), an ATL fuel cell, and a great deal of added lightness with a sanitary cabin, Lexan rear window, and unpadded aluminum seat.
The point of RetroRacing's campaign was to prove that the Karmann Ghia is a real sports car. We're done that many times over now. We fly the VW flag in the face of the Loti, Jags, etc.
By the way, the MGB GT that finished just ahead of us sports a Rover V8 engine. Next weekend we take on the Ferrari club.