thanks for that, I will look at the HKS system based on your personal recommendations
One thing I have noticed is some get bad reports for the clattery noise they make, I presume with a self contained cooling/lube system this isnt the case on HKS (as you said, just need clarification)
Also I'm happy with stock exhaust, would the system work ok? I'm not wanting to change too much at first so basically stick the HKS on, does it really require an intercooler or as its good at keeping a low temp is the intercooler really not needed?