Is the hole in the block for the road draft tube in the same spot on a 216 and 235 and how many different road draft tubes are there,I am putting the splash pans back on in my 37 and even though I have a road draft tube with no cap it looks like it wont come out the same hole in the 37 splash pan. I know I can just relocate the hole in the pan but what years of road draft tube will I need to go through the original hole in the splash pan.