I need to get a new flywheel for my internally balanced 383. I see there are 2 available, a 153 tooth and a 168 tooth. I tried to look up what the difference between the 2 is, other than the obvious 15 teeth. I found the difference was between the staggered and inline bolt holes on the starter. Well, the block was a staggered and I drilled the 2nd hole inline so that I can use my Tilton starter. Which flywheel should I get??