Allan, if you know the locations of the cross still it would be easier drill in holes for the bolts... I did mine on the truck but had to more the bed side to side and raise the bed to drill the holes... An easier way might be to mark the holes, take the plywood off and drill your holes...This will work if you know the locations of the cross stills... I figured mine out by looking on the frame and saw wear marks and confirmed the front one by asking here on the forum...


1954 Chevy 3104 3 Window Hydra-Matic in my family for over 60 Years

Once in a while you get shown the light in the strangest of places if you look at it right... "Scarlet Begonias" Grateful Dead 1974