they exist somewhere... my mechanic had told me about them a year ago. and then i saw them in the new product section of either jp magazine or 4wd & sport utility magazine. i thought they were a good idea but never got around to buying them (needing other things for the rig).

4.2 '87 yj, 263,000 miles, mopar mpi, 33" mud bfg, skyjacker 4", 3.73 gears, arb lockers-f and r., tom wood's 2.07 shaft conversion, tom wood's hd driveshaft, magnaflow/custom exhaust, 4wd bumper/swing-out tire carrier