Well, another question has come up. Those HPI HB D8T Diff Pinion Gears are not working with the Traxxas steel driveshafts. The pinion shafts are too long for the driveshafts, both front and rear. The dog-bone will not fit cause' of the length of the pinion gear. Are there shorter 10T Straight Cut pinions that will work on those HPI HB D8T Diffs?
If it's too long, can you grind down the pinion, or get a shorter dogbone?
I ended up with Mike's chassis, and if I remember correctly, 115mm rear dogbone, and 125mm front. I have the 35mm chassis extension on there and a Kyosho MP9 center diff, so those numbers will be different. I probably tried several different length bones before I finally found some that fit.