3 or 4 would not be unheard of . Slightly off topic ,The most I ever found in one car , would have been a 71 Torino Cobra I once owned , about 8 sheets , but all different, consecutive sequence cars, still connected together in a stack under the carpet.

I have had several Mopars that I did pull 3 sheets from , usually 71-up B bodies , (back seat upper and back seat lower, then under the carpet).


The best "secret hiding place" to find a buildsheet on a 1970 Hamtramck car is inside the drivers bucket seat upper half , inside the springs behind the plastic back cover . Often times these will be the best preserved sheets you will find as well.
My FJ6 T/A had one here ,folded twice , it was in near mint condition.


Greg