I have collected various bits & pieces to build an A15 for my sedan & was wondering which combination will best suit my purposes. I want torque rather than outright horsepower & although I am not really worried about fuel economy, I don't want it to waste fuel. I have an A14 oval port head (rebuilt) but twin 40ml Dellortos on a round port manifold. I already have extractors on the A12 & apparently the head has had a bit of work but probably needs rebuilding. I was thinking that the A15 with a mild cam, round port head, twin dellortos & extractors would be a good combination in a street car. By the way, luckily someone has fitted a late model A12 so the engine mounts have already been modified.