None Believed made. (
www.firstgenerationmontecarlo.com). There were however 402 Big Block Monte's made with the 4 speed. These 402 cars were not anything special as far as SS or anything, but they did get the 12bolt rears, and if auto, the 400 tranny. Also, all monte's were LS5's (and the HP rating was rated lower than in the Chevelle's, but the same LS5?), but no documented LS6's.
I just got a 70 Monte SS, # match, Bucket seat car. Awesome to say the least!
In 72 the SS was discontinued, and they had a "Custom" package which you could get, but with a 350, 400, BB402 or BB454. I *think* you could get the 454 all the way to 1973-4.
Rich