Maybe you should be thinking about what the best place to learn about intercoolers is first. That said, after reading your post I can assume you have no plans for buying a core and welding on your own endtanks. I would say go to either AAP motorsports or 935 motorsports as they should sell either the HKS or GReddy kits, which are the way to go in my opinion. Though I did like the pictures of the kit HPF was making...