As I think about it you may be able to figure out if the drive shaft will work yourself.
The first step is to make sure the splineed shaft on the front matches the tailshaft on the tranny. There are lots of people on this BB who can tell you, but you can also just crawl under the truck and see if it slips in and if the oil seal fits.
If it does, take the shaft out and look at the splined part. Can you see where it turns from shiny to dull on the outside? That's where the oil seal rubbed on the original setup. Measure from this shiny/dull transition on the shaft back to the center of the fixed leg of the rear u-joint spider. If this measurement is within a half inch or so of the distance from the back of the tranny oil seal to the saddle on your differential it should work.
While you're fiddling around with the driveshaft, keep in mind that the angles of the tranny tailshaft and the rear pinion need to be pretty close to parallel. If not the drivetrain will shake around. So, if you get it all put together and it shakes on acceleration or slowing you may need to check the angles. Adjusting these angles is not a big deal. as you can get shims and wedges to fit under the leaf-spring mounts.
Hope this helps!!
[ November 24, 2002: Message edited by: bluesman123 ]</p>