Sounds about right, my fourth Mopar was a 70 Duster 340 T/A block, B-Body Hemi 4-speed (cut the trans mount to make it fit) and 4.88 8-3/4 with straight through side pipes and blue crushed velvet bench interior, LOL. Sold the car to a friend and he lost it, still have the girl, this pic from 1981...