Which one?
Mine is 3,690 without a driver, no weight adding options other than PS and PDB.
That 68 of Rick's I wouldn't be surprised if it scaled at 31-3200 lbs. without a driver give or take, and I believe is a no option car to exploit the weight advantage more.
67-68's are the lightest, 69's got a little heavier, and 2nd gens just got plain chunky
But 70 and up does have a couple of minor advantages, the engine setback being one which helps weight transfer, critical point running on 6" bias plys. Usually cars with more rear overhang have an advantage too, like A-bodies.
That vette he's running in one of the vids isn't a lightweight either just because it's fiberglass, not like people would assume. They added alot of weight with the style change to a C3 in 1968. My 71 Big block vette tips the scales at 3740 without a driver, but does have AC, PS, PDB.