Editing Choosing a twin turbo SBC kit

This is my first post so go easy on me, I have a 78 camaro w/355, turbo 350,, it has all forged internals, steel crank, 2.02 heads with roller rockers, 8.5:1 compression ratio. I would really like to put one of the kits below in the camaro does anyone know if they are good kits or just a joke, i would also like to know if there is anything that i need but the kits do not have. I have a holley 750 carb mounted on a edelbrock performer rpm intake would those need to be upgraded too. My goal is to have 475+ hp & 430+ ft lbs I believe that it would be easy to achieve with just 6 or 7 psi on each turbo.   

http://cgi.ebay.com/ebaymotors/Camaro-Trans-Am-Firebird-82-92-V8-SBC-Twin-Turbo-Kit_W0QQitemZ250331832453QQcmdZViewItemQQptZMotors_Car_Truck_Parts_Accessories?hash=item250331832453&_trksid=p4506.c0.m245&_trkparms=72%3A543%7C65%3A12%7C39%3A1%7C240%3A1318

http://cgi.ebay.com/ebaymotors/Chevy-SBC-Twin-Turbo-TT-Kit-1982-1992-Camaro-Trans-AM_W0QQitemZ350131321700QQcmdZViewItemQQptZMotors_Car_Truck_Parts_Accessories?hash=item350131321700&_trksid=p4506.c0.m245&_trkparms=72%3A543%7C65%3A12%7C39%3A1%7C240%3A1318

I think I like the second kit more, but I am sort of a beginner with turbos. I also plan to switch to a 700r4 and 3.55 gears