there is no way that could be an original 440+6 because it's a 69 GTX
In 69 the only way you could get a 440+6 was in a road runner or superbee only with an "M" as the engine code, and considered a special handling car. They were released some time after the start of the model year.
In 69, the GTX was only available with the standard "L" code 440 4 bbl. OR the "J" code 426 HEMI....those were the only two options.
1970 was the first year it was on the option sheet for the GTX and road runner/ Superbee and Coronet R/T as a "V" code engine option.
