i had a hell of a time figuring this out too. i've now got it nailed down to a science.

go to sears, pick up a 14mm u-joint socket(about 8 bucks, but worth its weight in gold here). stick that on your ratchet with an extension and put it on the side of the bolt towards the rear. then take your 14mm combination wrench, stick the boxed end through the little hole in the bottom of the crossmember and onto the other side of the bolt. let it hang, and reef on your ratchet. works every time <img src="/forums/images/graemlins/lol.gif" alt="" />

'79 sport 4x4 longbed <img src="/forums/images/graemlins/smile.gif" alt="" />
20/22R hybrid with EB's OS valves, 268c cam, offy intake, weber 32/36, thorley header, 5 speed swap, 34" LTBs, downey 3" springs, marlin hysteer, 4.88s and locked

'91 4x4 shortbed
22R-E, W56, the dd!