How many pounds of boost could I run on a z6 motor. I looking to take the motor to a shop to get the bottom end worked on. What shop do you guys recommend to take my motor to get worked on. Right know the block is stock and I think 5 or 6 pounds of boost will be ok until I get the bottom end beefed up alittle. The car is automatic I just need more power. But let me know what would be the best shop to take my car to for the work and reliable people for the job. Thanks