My son bought a second hand SC 1.08 (same as the ASP I believe?) with a busted carb. We fitted an Enya 60 carb which was a drop in fit and the engine works perfectly. From memory I think it was giving about 8000+ on a 15x8 prop but I don't know how many revs it might have lost from the standard carb. However, it's totally reliable on zero nitro even though anyone who felt the compression would throw it away