Thanks for the info everyone, Isnt't the 8 1/4 and the 9 1/4 the same length from axle shaft centerline to u-joint centerline, thereby able to use the same driveshaft assuming the u-joint size is the same? I may just have to check into having the 9 1/4 axles redrilled, I never even though of that, is their enough "meat" to do that safely?