I have a LM7, 4L60E Tranny, and a NP241C. I want to mockup the Engine fit to install engine mounts. I would like to make sure I have good clearance for the headers and I am looking for recommendations. I know nothing about headers. The truck had a 350 with shorties so I assume that is the low fit risk way to go but I have no clue on brand and model number. Thanks
