yea, the xs engineering kit looks very promising.
but staffords fabrication is also working on a kit for the gts, DA sports is taking orders for the gts kit.
"I know we'll need to sign up for sponsorship before we can advertise, but I thought I'd let you know that the kit is close to release.
Price will be $3700, which includes:
K16 turbo (like those on the 993 Porsche),
321 stainless steel manifold, up-pipe, and downpipe (lifetime warranty on these components),
Piggy back computer system with fuel and timing control, open-loop operation, and data acquisition (lap-top reprogrammable if you so choose, but it's pre-programmed when it arrives),
Spearco Intercooler (rated at 530 hp or 770 hp depending on which option you choose),
Factory oil pan with return fitting welded in,
Optional ram-air Intake
Optional HKS SSQV BOV (Bosch recirculation valve is standard),
Aluminum piping manufactured by Injen
for a seamless fit and finish,
All necessary hoses, clamps, fittings, and attachments.
That's about it. It's set to be distributed by BorgWarner's retail stores here in the States, and possibly in Germany and Japan. "http://www.dasports.net