Thanks for the clarification Dale, the blue Capri spec makes more sense and a cheaper build too! Those knock-off GT40 wheels and hubs on the Gunston car would be an expensive mod. And a V8 would be a lot less costly than building the V6 eg a Roush crate motor here is relatively inexpensive, would only need the sump altered to clear the crossmember.
I'm assuming the full regs are online?
Cheers, Grant