so i have a 1999 gmc sierra the new body style. and i pull the 5.3 out and got a 6.0 thats the same year. and the flywheel looks a little different, the 5.3 has a mild arc to it. and swapping that on to the 6.0 im worried the starter wont hit it. is there something i need to do to it to to bolt that motor to the 4l60e in the truck now????