Why dont you run the VIN number through CARFAX? If It had a different engine in it when built that sight should tell you. It cost like $15 bucks to run it so if you dont want to do that, I have unlimited reports till May 30th or so. Reply or Email with the VIN and I will run it.
Lawboybill@yahoo.com (in the subject line..please put CARFAX REPORT so I wont just delete it..I dont read emails from people I dont know.)