All seriousness, do you have a budget? RPW used to make manifolds for the 6g75 but they were like a grand each and if anyone can help you out it’ll be them. But, it’s just going to be a little expensive. Everything for the GT is
How about a supercharger from a Chevy 3.8? OEM, lots of support, would work with mild alteration. Not hard to find. About the right size. Both are transverse engines too.
Hmmm. Thats a lot to think on. But boy that would do some fucking work! Man that sounds strong reliable and mean. I like it. Ive been looking into those chevy3.8 sc i think the company is eaton? Itll take some fabrication but might be possible. Idk. Ima have to do some real time thinking. Id rather just wait and get that engine anand transmission. Hmm. Have you guys seen or heard of this electric pro/turbo charger (idk what its true classification is) but its made by torqamp supposedly spins as fast as a turbo, has a generator which takes stress of your alternator, aanndd things pushes 5-6psi. Could put it on any car. super easy install. Just costs 2,500...Rear mount turbo is still always an option <a href="http://club4g.org/board/images/smilies/wink.gif" border="0" alt="" title="Wink" ></a>
I'm a parts dealer, I'll get you a deal on what I can get for you if you opt to go that route. I don't know what your budget is like. Cap the build around 450hp though, or else it gets insanely expensive (450hp to 500hp will cost about $3000 in engine work). It's stuff I'm familiar with, it's just that the 6G75 is a really expensive platform to make power with, and very few companies are interested in making the parts. Nobody wants to stock them either, so all are one offs, which adds highly to costs. Ross is the onl one who readily does the pistons, at a cost around 1000usd depending how they feel, and the best deal on rods is a company in Australia I've found doing Pejero stuff. I'm still trying at getting Wiseco to take on the pistons, and Brian Crower to do the rods, but need some specs from someone willing to send me a piston and rod, or to get one from a junkyard which I haven't been able to find. I can get this stuff added on to company part lists, it just takes effort from me and other people who are serious about it.
It'll sound silly, but for a high power build right now, swap in a 4G69, keep your rear end, and use an evo 8/9 transmission. You can make up to 1200hp cheaper on a 4G69 than a 6G75, beyond that it levels off to both being insanely expensive (your rear end won't do 1200hp, however)
The torque amp turbo flows about 16lbs/minute of air. It'll give a huge torque increase down low, then choke the engine up top, as shown by their own dyno charts in testing (350z). It's too low flowing to work on the 4G69 even, it's more for 1.5L engines and smaller that are NA that want to make around 175hp
As for that V8, it's another step more obscure and will get even more expensive to build and make power with. It'll also eat up engine bay space you don't have to spare