I am in the process of picking up parts for an Alpina like setup for my 2002 tii. I had planned on using 45mm TWM throttle bodies but then I remembered that M3 throttle bodies are 45mm slide throttles, which are really slick. How different are the intake sides of the M3 head and a 2002 head? Is there any way to easily fit the slide bodies onto a 02 or I am I looking at building a custom manifold? Any input is very helpful. Also does anyone know of a source of a set of these bodies?