fender tag help please

Wondered if you had a B or an E body, thought you might be a B body guy. That's a nice one, E55, D21, SWEEEEET!! We have a '70 Challenger 340 4spd. Needs a LOT of work. Are you on Jeffs E body board?
Aren't those codes something. They change every couple years just to throw ya off, and it works. Engine code for a 273-4 in '65 is 31. In '66 it changes to 32 and 31 is 273-2. These things drive me crazy. :shaking2: Ray