Need advice on buying dart swinger

if it all has been upgraded offer 4500.00. see if he bites at it. 5000.00 max if it has all been done! if it hasn't been all done use those things as bargining tools. i would stay firm to 4500.00 if it hasn't......remember anything with mopar isn't cheap! they are very expensive cars to mess with compaired to gm or ford. interior parts are expensive as well. that is also a good thing to bring up.