302 should only have a single rail and Borg Warner, not that much different to Aussie 4spd and 10-bolt? Equivalent of an XA GT with toploader and 9" would be a HQ with Muncie and 10-bolt. Ford might have been in front with the 9" over a 10-bolt but lose every time against a Muncie!

PS, I don't think there is too many of us that would choose (as an engine) a 308 over an XA GT 351. But I'd have one any day over an Aussie built 302 Cleveland! I'm talking pre ADR27A versions of both. HJ spec 308 are a very good engine.