Originally Posted by LT69Padawan6
some sites I visited specify whether its GSR or not.
But look at the part numbers, they are the same. It may specify GSR or LS just so people have peace of mind...but part numbers are the same.
As for the intake, yes the GSR throttle body sits lower so your CAI won't work. Your header from the LS should work fine, as long as you use your LS cat.