Re: LS6 Chevelle build sheet fun fact.
 

mr70,
Found two broadcast sheets for 1969 Super Bees in the same fashion, one for my car and one for the car a few vins prior.
Both were just base 383 Bees.
Also an associate just found a broadcast sheet for a 1970 W30 behind the drivers bucket seat back cover.

Re: LS6 Chevelle build sheet fun fact.
 

Charly what a great story thats the first time I heard of one mounted there my LS-6had three the third was on the pass door panel jeff

Re: LS6 Chevelle build sheet fun fact.
 

Under the carpet underlayment is where I found one about a month ago on the 70 Judge Conv. that I am painting now. Drivers side. If I am not mistaken someone has found one there for a 67 Z also. Very good cond. but stained from the tar. there were also about 25 trim screws inbedded in the tar underlayment I think I will document the position so as to make the car exactly as original along with the paint run in the door jamb.