What about a simpler version of Coilover’s suggestion?
Speedway sells a large cap GM HEI for the 235/261 for $100-ish. Machine work is already done. Yes, it’s chinesium. But unless you’re pulling an OEM out of a wrecking yard or paying dearly for NOS on eBay…the HEI dizzy for your SBC is probably Chinesium, too.
Perhaps swap some better internals into the Speedway dizzy and have the best (or less bad) of both worlds?
(FWIW - I have no intention of trying this. I don’t much care for the look of the large cap HEI on a Stovebolt. Old wiggly and my “clap-trap” generator seems to keep doing their thing).
