That's how much room I have, not really enough. Due to the vette/cts-v balancer, its tight up close to the block. Best bet would be to tap the pan, either right at the bottom front , or the side. The front I could possibly drill/tap with the pan still on the engine, the side no, Id have to pull it. Im gonna check out a bunch of reviews for the turbo werx pump... might be the most feasible option.
