The weakest thing that I have found with the 8 3/4, is the suregrip carrier. I have broken these when you get into the low 11's. A spool will fix that concern. I know that the 9 inch is the rear of choice, but to get a stout one uasully requires a few aftermarket parts. It seems that when the 9 in. breaks, it spits the pinion out of it. I seen this happen 3 times last race season.
