The only pain in the ass about installing the intercooler is cutting the hole, if you can get your hands on a metal hole saw just do it like that, when you think about it even if you have to buy the hole saw you'll spend less money on buying it than getting someone else to fit it, and get to know your car more... its a good experience and in an R33 its quite easy, just needs the right tools for the job. Theres a guide on here aswell i'm pretty sure i've seen... its certanly not worth giving someone else $250 for something you can do yourself.