As far as the twin turbo goes, I do have the kit. Trust me, the Houston upgrade is far superior at producing power. Houston's engine is also safer, has a better power band, and will give overall better results. You get all of this at a price $1000 -LESS- than the twin turbo kit. Just my $.02. -Dave Stragand http://www.projectvixen.com [Non-text portions of this message have been removed]