71 198 slant 3 on tree

It's the closest thing out there and it's cheap. I'm certain it can be made to work. Did you bother to ask what the one barrel side bolt pattern is? From center to center of the 2 slots across from each other? I would be willing to bet no one you talked to has ever even seen a slant 6. If everybody just laid down when someone else said something wouldn't work, hot rodding wouldn't even exist. Maybe Tiddly Winks or stamp collecting is more your speed?