you can do what i did and have one made. this is not the affordable route, but i have a brand new oversized double cardan driveshaft with three year warranty, and 6" slip yoke (lift potential
). this was aboot $600 canadian. however, you can get the same style (double cardan) shaft from the front shaft of a gen1 91-94 exploder. it will have to be shortened and balanced, but i was quoted $150 to cut and balance. any competant machine shop should be able to handle this.
Napa in the states also carries new ones, a little cheaper, but hella easy to install - they're made for the b2 as replacemants.
Mine that i had made - look at the difference in the old cv shaft thickness, compared to the 3 inch tube and beefy joints!!
this one is availiable from NAPA (u.s.a. only, part numbers disappear at the border?!?!). NAPA NPR # 12833 thru 87
this is also availiable from NAPA NPR # 12823 88 and later
with any driveline swap, you want measurements, man. my springs are sagging something fierce (until this weekend
), so i ordered mine with only 3/4 inch slip yoke room. in theory, if i bottom out the bumpstop, i have 1/4 inch of slip room to go before i need a new t-case. i wouldn't advise doing this everytime, but like i said, springs sagging, lifting planned.
hope this helps.
nate