Thanks alot Rob for your more detailed reply on upgrading my OEM parts ;) some of the things on that list i have FMIC for example. I was considering the stainless japspeed manifold or the one for sale on here by killamats, trouble i have on choosing is one is a small tubular manifold the other is measured length headers. Basically going to change the manifold and center section in one go ASAP when i have bought the manifold so garage knows the work involved. Enzo that would be great on the help front, so new to these cars i don't want to break it by doing something silly lol Pepper