I think you have Spicer 1350 series U-joints, and if so the the Spicer U-bolt kit is 3-94-18X
http://cgi.ebay.com/ebaymotors/U-BO...itemZ370165002641QQrdZ1QQsspagenameZWDVWAs found in this Spicer catalog page 16:
http://www.roadranger.com/ecm/idcpl...tion=Primary&&dDocName=RR_J300P4That's a common part that fits hundreds if not thousands of different model vehicles, and it's recommended you replace them after each use, they should be readily available in good parts store.
According to Spicer:
DO NOT reuse bolts, straps, nuts, or damaged bearing retainers,
or use inferior grade bolts. Reuse of bolts, straps, nuts,
or damaged bearing retainers, or use of inferior grade bolts,
can cause driveline failure, which can result in separation of
the driveline from the vehicle. A separated driveline can result
in property damage, serious personal injury, or death.
If loosening or removing bolts, always install a new strap and
bolts and torque bolts to specification.
Might try another parts place, they are very common and meant to be replaced
Grigg