What would I have to do to replace the 30 spline axles in a 60 rear with 35 spline axles. Besides changing (obviously) the axles and the carrier. I know Im going to have to do something with the spindles, but what I dont know is if I should bore them out or replace them whit d60hd ones, or d70's. Last night on pirate I got a little confused about this, someone was saying that you should cut the spindles off a 14bt and weld them on a 60? Dont know anything about this.