It would depend on if the drivetrain is correct and original to the car. The rest is restorable. That's assuming the PHS is authentic, and that the VIN is on the correct car.

A T/A or Ram Air pedigreed car without the numbers matching drivetrain is a hard sell at a high price. ANY collectible car loses significant value if it is not numbers matching. And that's a big chunk of money.

For the money I'd rather have two less pedigreed cars and a healthy upgrade budget. But that's my opinion.

I have no reason to suspect that the seller is misrepresenting the car. At the same time I don't feel that everything is quite right.