Welcome to FABO, you're going to have fun here.
Careful, you may find out things about A-bodies that might make you put your B-body up for sale so you can "move up" to an A-body, lol! Seriously, we love all Mopars here. Great people, so ask away on whatever you want to know.
Way back in the early '70s I used to love taking on heavier B-bodies in the local "street light drags" with my '69 340 Dart Swinger here in SoCal. My lightweight A-body with a quick-revving smallblock could always jump out in front of the heavier cars and the races were never long enough to allow the big-blocks to get into their higher horsepower advantage on the top end. Not exactly rocket science but so many guys could never figure that out.