Link to JWT's site for these turbos:
[ http://jimwolftechnology.com/customer_part_detail.asp?PartID=403 ]I really wouldn't recommend using these turbos. Priced at $4K for the pair, they are IMHO very overpriced for what you get and there are better alternatives. (I hope my opinion on the price isn't taken the wrong way, that's a lot of money for a pair of turbos). If you are looking to make ~430RWHP on pumpfuel and ~500RWHP on racefuel, consider the Z1 GT600R setup. This is a GT28R turbocharger, BB format, and will also use 5-bolt downpipes. They are considerably less expensive as well and spool up very quickly. Here's a dynochart of Tyler Duschane's car I built the motor for as well as dyno tuned: 555cc injectors, HKS SMICs, AshSPEC DOOLZ, stock exhaust manifolds, downpipes, testpipes, cat-back, wiseco pistons.
 This is the same car with a completely stock engine and very conservative tuning on racefuel:
 If you are looking for bigger power, the GT28RS is a proven candidate for ~470RWHP on pumpfuel with the same mods and 550 RWHP on racefuel. Considerably more power can be achieved with a fully built motor, upgraded cams, upgraded exhaust manifolds, and bigger injectors. You can obtain these turbochargers from various sources - Z1 has them as the GT675RS turbo kit which uses the .64 A/R turbine housing (which is what you want), for less than JWT's Sport700 (which is the same turbo, except they use the .86 A/R turbine housing which has shown to be too large for our applications and creates significantly more lag without any apparent top-end benefit) Here are some dynocharts of various GT28RS setups:
A little more laggy, but superior top-end performance.
 GT28RS hybrid (my personal Z)
 Another GT28RS hybrid with same mods as Tyler Duschane:
 Just my $.02 here... Hope this helps you out, and good luck!
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[ agpowers@bellsouth.net ] Enthusiasts soon understand each other. --W. Irving.
Are you an enthusiast? If you are out to describe the truth, leave elegance to the tailor.
Albert Einstein
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