www.teamdi.com
Ask for Bob ndtell him what you are looking to do, he is right in Rockaway. He has a shop there and can do whatever you are looking for, he has a few race cars in his shop they he will show you. Last time I was there he had the Motor out of a SN-95 GT and was building a blown motor for it.
Where is Sussex are you? I used to live North of Stokes in Sandyston.