Its a shame Mopar did not offer the 440 six pack in these cars in 69 or 70 with a type of factory header like the 64 Hemi cars had. They would then be a killer combo for FAST. Or to even built some Darts with Max Wedge engines. 440 Darts are real fast when you add headers , good intake and carb and a nice solid cam. To bad they were so limited from the factory. Ron