Roadrunner or Not

In 1968 RR's only had 383 and 426 Hemi choices and that was it absolutely no 318's in a RR...... In 1969 also until 1969 1/2 then the 440+6 was available. No small blocks at all in a RR until 1971 then it was a 340 and it was also the last year for the Hemi. Now in 1973 the standard was 318 and the big blocks became optional.