later model trucks used gasket goo exclusively on the oil pan gasket.

permatex gray is a direct replacement for black FIPG, it even lists the part number on the box the tube comes in. i use it exclusively on everything. stay away from the blue crud.

'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!