Ok from what I read the M45 is Ok for up to about 10 psi, hard to get anything more out of it, some people are running 12 though. However, I'm looking at running about 5psi or so, as anything over 7.5psi is bad on stock internals. Can't find that much info on club gti apart from what I've posted here already. Also read that a crossflow head is a good option. Opinions? I know DH has one on his track toy and he will be dropping an ABF in there soon, he said the head would be up for sale then and if I was interested he would make a deal with me

However if the cross flow head requires lots of hassle to make it work with the charger then I won't bother.
So far it seems like if I buy an M45 charger and megasquirt ECU I could fabricate my own brackets and tensioner and run a low boost set up. Doesn't sound too bad or too expensive tbh....Well under a grand and it's possible.
Thoughts on intercoolers? G60 set up or FMIC needed or will running no intercooler be ok with only 5psi?