1972 340 switching from auto to manual 4 speed A833. Recommendations for flywheel and bellhousing?

SGlez10 said
130 is the number but some are 6 bolt some are 8 bolt. Also, they vary in 10inch, 10.5 as well. So a little confused about what I need

I'm not aware that 340s ever came with 10". Never heard of a 340 8 bolt. (Should have said factory) Maybe some weird industrial/ marine. You have to be careful what you read into catalogs

Found this re: 8 bolt

340 8 bolt crank flange ??????

8 bolt crank flange

8 bolt small block crankshaft