Man, I've got the perfect stall for you.
It's a TCI-241500A that was in my '67 for one month last fall when the Chevelle had a mild SB in it to move around until my 496 was completed.
Bet it doesn't have 200 miles on it...then was taken out and put back in it's original box.
I bought it brand new from Summit...it stalls about 2200...which is 400-500 rpm over stock.
http://www.summitracing.com/parts/TCI-241500-A/
I'll sell it for $135 shipped