[Super73]

There are several companies making motor mounts to keep the motor in the stock location. Some are adjustable so you can move it back a little. Check out the LS section here. There is a lot of info.

These headers are for 4th gen Camaro's. I was running a set again for 4th gen f-bodies but they were 1 3/4 stepped to 1 7/8. They will work on LS1/2/3/6 LQ4/9 heads. I am not sure if they would work on the LS7 heads though. I know the intake is different but not sure about the exhaust side of things.