The radiator and shell both can be adjusted independently. I got those close then stretched masking tape from shell to cowl to make sure that I had the right slope. The deuce radiator is tilted forward at the top toward the front and is not perpendicular. Through trial error I finally got mine to a point that I used a 4 1/2"-5" grinder to get it to the final fitment. I didn't have too much trouble with the tree piece Rootlieb hood but fitting the windshield and top irons sure made up the difference.