I want to drill my intake for direct-port nitrous nozzles, but I'm not sure where exactly to place them. I want them on the bottom, and I'm mainly worried about interference with the water pump pipe, and I don't have a mock-up engine sitting around to check myself. Would there be any fitting issues if I drill them about 1" back from the head flange? Or would they need to be farther rearward for the lines to clear? Thanks for any insight!