OK, I'm dumb, need help

The factory used adapters in early a100s to mount a small block 727 to a slant six. The iron HD 11 inch \6 bellhousing would work, but I would contact Wilcap, they could pattern something up for you to be able to use a modern "catch-can" blow proof bellhousing to a tremec. They used to have one to adapt \6 to chevy V8 bolt pattern, this could get you into a used SFI bellhousing for a lot cheaper than a Chryco specific SFI bellhousing. I would be willing to bet the GM type Tremec would be cheaper than the Mopar specific one, too.