I was wondering if a 14 bolt rear end would fit in my K5 without having to shorten the driveshaft. Also will a 1 ton 14ff bolt onto the stock driveshaft U-Joints? I have access to both a 78 3/4 ton 14 bolt and an 86? 14ff 1 ton. I would rather use the 1 ton because it is only $25 Thanks.