[jhautz]

Yea, use the buggy diffs not the truggy diffs. 13/43 vs 10/43 makes a HUGE differance. Also ditch the 72T spur and run the 66T and use something more like a 24 or 26 tooth pinion. I was running stock diffs with a similar setup and was able to run 24/70 all day befoire I went to the Mod1 gears. With 13/43(3.08) buggy diffs you could probably run 24/66 without a problem. I think thats the max that the stock motor plate will allow gearing wise. But if you need 26T pinion just dremel the slot in the motor plate longer and you shouldnt have a problem.

I looks like you had that setup for the most conservative gearing you could possibly do.