Does anybody have any info on what the difference it between a Dana60 rear and a Dana60HD rear? And can a Dana60HD be used on a blazer? I'm looking into this because I wanted to step up to the D60/14bolt combo with ARB lockers. I had a locker that fitted the 14bolter (Some guy built it) but that one exploded under my Dualy. (Guess he didn't built it that good). ARB does not build a locker for the 14bolt ff, but does built it for the D60 and D60HD. Also on this page <a target="_blank" href=http://www.arb.com.au/ALAC/International/Chevy_GMC.htm>http://www.arb.com.au/ALAC/International/Chevy_GMC.htm</a> there are Dana70's. Never heard of them. Usable? Thanks in advance. 1988 K5 Blazer Silverado Grand GT in the Netherlands. "No it does not fit everywhere overhere, but after one pass through it will fit the next time"