VIN # locationS

I'm looking to buy a gmc sanoma but the guy at the dealership thinks its a '95 but i checked the vin on the dash and it says its a '99. Does anyone know where else there is a Vin # stamped so i acn chek them? thank you

easyerway, squair headlights it would be a 95 more rectangle headlights is 98 and newer... a 95
http://www.queensu.ca/security/graphics/2004/95-sonoma-sls.jpg
a 98 and newer looks like... http://www.theautochannel.com/media/photos/gmc/1998/98_gmc_sonoma_xcab.jpg

I'm not sure about a stamped number, although I believe it is stamped in more than one location on the undercarriage, tranny and rear axle. My 96 has the VIN on every removable body panel and doors on non-removable stickers.