Well what was thought to be an exhaust leak, turned out to be a rod bearing that went out. After further review the main bearings were oversized when the motor was rebuilt which caused the oil to slip through, causing premature wear on everything else to include the low oil pressure after the rebuild. The rebuilt motor had roughly 900 miles on it or so. The yellow stang is being halled away to the garage tommorow, to get a Jasper Motor, with some more punch. Total price out the door will be around 3700.00. I only paid 3200 for the car. Lol, oh well Merry Christmas to me. I suppose it could be worse. I could be replacing a motor in an IMPORT.