Figures, I'd find it after I posted.

'58+ car 235's triangle bolt pattern points up ^, the later 6's and SBC bolt pattern points down v. A little fab work could make a bracket. Anyone know if the bolt patterns are in the same location?

'53 BelAir 261 3spd/OD 4dr
'54 3100 235 3spd
'79 C30 with a '51 235-'57Bellhousing-'67SM420-14bolt dually
'89 V3500 350/465/205 SRW CC
One Chevy just isn't enough.