Need to know some more info. Do you have a stock manifold? LS5 or LS6 setup. What fuel pump are you going to use, long or short? I just replaced my originals on my LS6 and after trying six different sets from part places that none of them fit right I bent up my own. I just put a pump to carb line on a 70SS L34 (same line as a LS5) and it fit perfect.