Hi ; I have a 65 skylarkGS vin#444375z124096 . All that I can find is Buick , skylark, 2door hardtop, 1965, built in fresno ca.,production #. Is this right. The car has all the GS emblems, it has a nail head .The ser# is gone ,it looks like it was machined off . The casting # are for a 65...