[gmachinz]

The floor area behind the seat are similar for K5's and suburbans but the pickups are different as they curve up at the rears of the brackets. I used Suburban bucket seats in my 86 shortbox truck but to make them work, I had to ditch the suburban seat tracks and instead I used 2 sets of pickup bench seat tracks. The mods required for a stock look weren't difficult-I shortened both seat forward/backward adjusters by 3" and redrilled holes in the seat framing to accept the pickup track hole alignments. It wasn't a big deal since I wanted to keep it appearing factory. And it gave me an opportunity to clean up/grease all the seat track slides, tweak the seat adjustment cable, etc. You could caveman it by putting the suburban seattracks in a HD vise and basically bend the rears of the brackets from facing down slightly to up slightly-this way it should fit the pickup floor alignment-Ive seen it done that way too....just he careful where you bend up with it or your rear mounting holes will be off.

And for the rear inner mounts I drilled holes through the floor and then welded 10mmx1.50 nuts from underneath to keep it looking factory-then I wirebrushed the welds-primed/painted and then undercoated the area all from underneath.