Based on the add... clearly, you want to put together a deal for all the components relating to this car including the “matching number’s” engine and transmission. It may not be a bad overall price, of course, dependent upon the amount of body work required on the shell... If I were in the market, simply ask him to send me clear photos of the stamped VIN’s on the engine and trans and then go from there. However, still some big $$$ to be put out trying to find some of the other gold mine pieces for this car...
Update... It seems that reading posts on another site, it is not the original #’s matching engine. Deal breaker for me...