I have a 1967 GTO that was built Late Oct 66. Engine date code is mid Nov, heads are 670 but date code early Dec. VIN is not stamped on block since that didn't start till late 67 production according to several websites. Everything matches according to PHS as far as it being an HO with WS block 4-speed car. I didn't go with original colors since it was Montego cream/white painted roof/with gold interior (to me that was butt ugly). For judging purposes am I correct in assuming that this is original equipment? I've read somewhere, tho I can't locate it right now, that all date codes should be within 60 days of the build date. Any help would be greatly appreciated.