1968 Road Runner 116" wb VS. 1968 Super Bee & Charger 117" wb * 1" difference

RR with 8-3/4" has 51-1/2" driveshaft VS. SB/C with 8-3/4" has 52-1/32" driveshaft * 17/32" (.531") difference
RR with DANA has 50-3/8" driveshaft VS. SB/C with DANA has 50-31/32" driveshaft * 19/32" (.594") difference