In the seller's defense, I can see why he only wants to sell locally. Less risk of a scam, less time involved, and just plain easier.
I've put cars for sale on CL before, you get bombarded with emails/texts from scammers and some of them sound legit, so that could be the reason why he's short/non-communicative.
If you have his #, call him, offer him a $50 deposit for better shots of the rockers/trunk area/rear strut towers, with the condition that deposit is to be refunded if they're rusty. If he flakes out, then you're only out $50 as opposed to a plane ticket.
However, based on your other posts, if you're doing an engine swap anyways, then buy the best car you can, stick or auto, it won't be staying in the car.