Another thing you want to check for is if your getting a new head gasket to lower the compression ratio. Check out www.suprastore.com, they have a 2JZ-GE turbo kit and they are sellin it for $4,750. This kit will get you up to 320hp, stock Supra Turbo hp that a little better deal than $7500 for 300hp. Then after a little more engine work you could be pushing as much as the supras do.