Just grab at the corners and pull up, the seat will pull up, then after both sides are up pull forward and the bottom comes right off. Make sure you remove the deadond material under the seats if you are doing any welding if not it could catch on fire.
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My Ride Check Out My Site 91GT, Holley SysteMAX II Kit-Heads 2.02" x 1.60",Full MAC exhaust 1-5/8" Long tubes, 2-1/2" O.R H-Pipe, 2 1/2" cat back, 12" K&N Filter, RNH PERFORMANCE Ram Air, Ron Davis Radiator, Full Suspension,3:73's, Welds, Best on new motor-12.60 @ 108, no traction 1.98