I CAME ACROSS A 1987 CUTLASS 442 FOR DIRT CHEAP. (NEEDS RESTORED) BUT IT HAS A SUNROOF INSTEAD OF T-TOP. VIN#1g3gr119xhp311381 BLACK WITH SILVER BOTTOM AND GOLD WHEELS. HOW CAN I FURTHER ID ID THIS A REAL 442. ENGINE HAS THE CHROME CLEANER AND DUAL INLETS FOR AIR. HOW CAN I CHECK IF IT HAS THE ORIGINAL REAR AXEL AND transmission. THE GUY HAS THE ORIGINAL BUILD SHEET AND IS THE ONLY ONWER SINCE 1987. THIS SOUNDS TO GOOD TO BE TRUE SO IM SKEPTICAL IF HE IS TRYING TO SCAM ME..... PLEASE HELP.