How about posting a location of the part(s) as a part of the ad and/or whereabouts you might meet someone to deliver? Some posters are really good about this, most are not. My two cents...
-Location -Item(part # if possible) -MY's that it fits -Condition/mileage -Price You could add Name and best way of contact(email, text, PM), but honestly the 5 listed pretty much cover the important stuff. You think that it would be pretty easy for people to accomplish this when trying to sell their stuff. Lol. IMO, the better your FS ad, the more likely that you will sell what you're selling.
Is there a way to have an autoform for classifieds where those fields must be filled out in order for the ad to successfully post?
I am not aware of one, although it would be fantastic! I'm not sure if it's something that could be added either.