Your take on a potential trade.

If the engine is decent I’d make the trade. I dont think there is a huge market willing to pay for a number matching Hang10
I don't agree. Hang 10's may not be worth what a 70 340 4 speed Duster is but a original or restored car with original drivetrain has value. Don't break up a matched set. If I was closer I would find a used teen, spruce it up and swap the thing out for the guy.