Well, i wouldnt bother even attempting it until i blew up the one from the 1500. Parish ran a 10.08 w/ 1,000+ whp in a 5,000 lb truck on the stock front diff. I tried pulling a buddy out in 4lo w/ 4.56's and blew out a tripot on my front left cv, without any noticeable damage to the diff.
yea man run it till it dies, you will break the cv shafts long before the differential in most cases, kinda like a "fuse", there was a guy jacqson i believe on FSC that was making adapters to stick the 3/4 cv shafts on 1/2 tons, but to answer your question no they wont fit, unless you do significant fabrication, especially if the truck is stock height, as the guy in that post was doing this to a "knuckle" lift truck, which already widens the track width and requires the use of spacers on the cv shafts(which gives room for the adapters) if you have a stock height/full drop lift truck there might not be room for the adapters. edit: that jaqson guy is here too, and he posted in the same thread about it
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