Mopar 413/426 Max Wedge block casting number confusion

Brooks James said
That was something I seriously considered, unknown motor home

A convincing touch would be to use the Max Wedge 4 bolt valve covers I have

I'm not wantin to be "that" convincing. LOL If I ever do it, I'm gonna disguise it as a 64 383 anyway. Kinda a car they never did kinda thing.