Reply to "Clips too thick... ??...."

We're dealing with a nearly 40-year-old performance machine thats likely been worked on by inexpert previous owners or clueless local shops. On some cars, the "proper" u-joints no longer press-fit into the halfshafts, and all sorts of problems result. Your driveline shop should notice if the ends are no longer a press fit. There are two fixes but what they will likely do is suggest cutting the (possibly damaged) yoke adapters off and welding new ones on. The other choice is going with a new halfshaft (or two). Finally, you might already have aftermarket Spicer halfshafts in place of the stockers. Unless they've been fiddled with, Spicers were gold-alodined and accept Ford F-500 heavy truck u-joints while stock halfshafts were silver painted and accept stock (larger than Ford) u-joints.