Too risky without better information from the seller. For all you know their stock springs from a 6 cylinder car. I'd pass on the deal. If the price is a super deal? There is a under lying reason.
I'll call again tomorrow and see if I can get some more information. Here's some pictures of the place. Mopar specialty shop going out of business, owner died I believe? The lady has a bunch of adds up on the Facebook mopar pages. Not much Abody stuff left, mostly b body stuff..