So my friend gave me a pair of 862 heads for free! I'm planning on sending them to Texas speed for the port and valve job. I have a 1999 Trans Am ls1 A4, slp lid, chris1313 ram air, mild cam (218/227 .600/.600 valve lift 112+2 LSA), LS1 intake, 1 3/4 long tubes contacted to a 3" y pipe. Car put down 376rwhp. Would would I expect to see when I put these 862 head on?