Not to put too fine a point on it...but the original Hemi was introduced in 1951.

And the 300 in the pic is a 300b from 1956...the original came out a year earlier.

1970 Dodge Charger R/T Hemi Orange U-code 4-speed
1971 Jaguar E-Type Series 3 V-12 4-speed 2+2 Signal Red.