No problem man. It's one of those things that GM had "issues" with. Like the change over from 12 bolt to 10 bolt in 1977.........no 1981...........wait, it's 1979...........but my buddy said it was 1980...............[img]/wwwthreads_images/icons/tongue.gif[/img][img]/wwwthreads_images/icons/laugh.gif[/img]
The change over from the D44 front to the 10 bolt front is just as bad. So is the 14SF taking over from the 14FF in the 80's some time.
I've also seen a 1983 GMC Jimmy K5 that had a D44 and 12 bolt that sure looked like they were factory. Caked with mud, rust, crap, and everything else, just as much as the rest of the truck. Nothing looked cobbled together, and everything seemed to be factory. Yet many people will tell you they stopped using both of them in the late 70's.[img]/wwwthreads_images/icons/tongue.gif[/img] GM must have just had some sitting around in a back room.[img]/wwwthreads_images/icons/smile.gif[/img]
285/75R16, 255/85R16, & 305/70R16 fit on a stock GM IFS fullsize 4x4 truck when on the stock 16x7 rims.