1962 VALIANT/6 to V8 SWAP

Professor Fate said
Usually the heater box has to go, but never say never...
Engine swap 62 Valiant
Early A motor mounts, exhaust manifolds, center link and throttle assembly should get you most of the way there.
Heck, in 1962 Dodge had Dragmasters shoehorn a 413 Max Wedge into a '62 Lancer (basically the same platform as the Valiant) for A/FX racing- they then published General Bulletin #394 to tell everybody how to do it themselves.

My Lancer is a Florida car, I found a new purpose for all that heater stuff.
What you can't see is a small CF ducted fan being fed from the windshield cowl inlet side cooling the back side of the pictured electronics controlled by a time delayed relay to help reduce heat upon shutdown.