Steve, I know nothing about Skylines
Only details I have are:
It is a silver one, RWD, 2.5 litre, single turbo, battery in the boot, very lightweight bonnet and boot lid.......um, I know that could apply to loads of them.....
I told him that he must PM you for advice.....
He's modding it already..........And thinking of getting an HKS Turbo
I know that you say that generally the HKS stuff is way overpriced......
I'm sure he will post up this evening when he sees this thread.....