Ok, I'm sending Paul the BH in question, which is a cast iron 3-speed BH removed from a '71 Dodge Sportsman van with a 318. The flywheel was a 143 tooth cast iron flywheel, and it was all factory, so they did come behind small blocks, but I suspect only in trucks and vans. Unfortunately, I sold the flywheel a few months ago to someone in OH.
I think you will ned the 143 tooth flywheel if you want to use this BH, Paul, as the starter teeth will not engage on a 130 tooth flywheel. Any manual trans truck or van should be able to supply one.
If you want to look for a smaller BH, just LMK. I haven't shipped it yet.