Originally Posted by floodo1

shock length won't affect ride height, just where the piston is inside of the body.

Ride height is determined by the length of the lower shock end, spring length, collar position, number of shims under toe blocks, and whether you're using the outer hole on the a-arm like you're supposed to.

My guess is that he has the wrong lower shock end, or is using the inner hole on the a-arm.