Like has already been said, I'll add my 2 cents too. 60lb valve springs aren't needed for a 3200 gsk. I wouldn't put them on, you'd have to over rev the piss out of it to where you'll probably have other issues too. I wouldn't spend the money upgrading a h1c or wh1c. I'd at least go with a hx35w, or a S300 based turbo like already mentioned. I have 5x.012s, 3200gsk, HX35w, 3rd gen intercooler, 20* of timing, and an industrial IP with no AFC on my truck right now. It'll tow anything you want it to, and it never gets above 1150* on the pyro. It gets 18-22mpg driving back and forth to work. Can't complain one bit.