I'm replacing the floor in a '64 safari, shell on. Hit a little snaffu that others may find usefull. The original floor panels had lap joints on the joining edges, centered on the frame cross members @ 4ft ctrs., glued and bolted to the cross members. Pretty simple 'till I got to my 3rd sheet and no longer coming out on a cross member! Stupid mistake but I never measured an original sheet
. They were 49 inches wide with the lap joint, NOT 48 inches like you buy today! Not a problem if you're gonna use a butt & doubler system, but a biggie if you try to route out lap joints.