That's great you can get the right belts. It's tough for us slant 6 guys. The original width belts on the slant sixes were 3/8 and those are all but extinct now. You get either 13/32 or 15/32 and most of the time it's a 15/32 in a 13/32 sleeve. Nobody carries the correct thin belts anymore and they look at you like you have two heads when you ask.