I failed to mention that I have the newer petcocks from MMM. They came 90's which I was able to shim them a bit to get the outlet to point to the outside. I have the lines routed between the carbs and out the front. I was thinking of routing them around the side of the carb bodies to the back side of the petcock but making sure the lines do not crimp is my biggest challenge. My fuel line is some thick stuff from the parts store. Maybe I need to find some thinner walled hose?