TA has them listed as 2 different part numbers, but I wonder if they'll interchange? Ideas brewing in my head . . .
You should have no problem going to a Buick 350 with your 4 speed setup. The V6 flywheel is a 153 tooth and the buick 350 is 168 I have read. Going the other way around (350 to v6) will not work due to the starter hitting the larger flywheel.
