Lee,
If its going to be mint concourse car then the standard one could possibly be worth more as they are few on teh fround. However, some folks would be buying it to do a 2 litre engine swap. It really depends on who is there atthe right time.
Personnaly I never have restored or built cars for resale so my input is maybe not valid? I have always made money on cars at resale but that has never been the intention.
CheeRS