I have felt your pain. Year, and years ago, I drove across state lines, test drove a blown 95GTS, bought it, and drove it home. Not 500 miles and the motor went. I didn't even make it home, limped up to my buddie's shop. For 6 months, blew another motor and supercharger on the dyno. Warped a head. Replaced everything in that damn motor and it never ran right. It sat in their garage for 6 months. I finally sold it. It plagued the next 2 owners after me. But, it left a bad taste in my mouth. I didn't own another mustang for 4 years...part of it was being overseas. If you must sell, do it. The urge to get back into the hobby might come back later on.