1969 340s were assembled & painted at the WINDSOR engine assembly plant - they had NO need for orange paint (the ORANGE engines * 383HP & 440HP * were built at Trenton & * HEMI * at Marysville)
Chrysler Blue engine paint was NEW for 1970 on low performance 318/383-2bbl/non-HP c-body 440s
there is NO good reason for a Chrysler Blue '69 340 to exist that one would want to copy in a restoration (mistake/repair/other/??)
