Has anyone ever put a stock gsr intake manifold on a ls,and did it help,or would it help.The ls has some kind of crapie ,welded on intake manifold, and i have a spare gsr intake manifold would it help the flaps are tooken out.
Help if you can

 

You can try it but I am pretty certain without modifying the gsr it is all by itself, will not work on any other heads.