Thanks Itsmeagain, For your help iv learnt a lot all ready, Just one last question, if i fit a t3, what revs will it it boost at?

Thanks again i will update you with progress and a graph from my first rolling road session

 

probably about the 2300-2500 mark.. on mhy standard C/R 2.8 my T3 sized turbo is on full boost (6psi) at 2800rpm obviously with almost 3/4 of a liter more capacity if would be less

 

Thanks doh for your help also