Just some FYI. The floorboards are all the same for all A-body GM cars. Ie- 68-72 Chevelle, Malibu, Monte Carlo, skylark,GS, cutlass, 442, tempest, lemans, GTO, Grand Prix.
Don't want a pissing match on how the Monte and Grand Prix are G-bodies or A-body specials. For floorboard purposes, they are all the same.