what would you say i would gain the most hp from...heads and headers let me know thanks

 

On a stock car.... headers are your best bet. The car will only benefit more from heads when you already have the headers.

 

Pretty much.

I have a hard time believing the shear number of people who think they have to change their heads early on in the mod process. Your stock heads are very good compared to everything GM made before them and our compression is already fairly high for a production motor. There are gains to be had with ported heads and such but that should be after all the other stuff like full exhaust, gears and stall if applicable, cam should come either first or at the same time.