Most likely a B/RB. 650 horespower doesn't really have a low cost option. Lol. Or not one that will live very long!
1969 Dart GTS 340 1969 Super Bee X9 N-96 1969 Coronet R/T X9 N-96 2015 Dodge Dart GT 2019 Ram 2500 Big Horn. Looking for the original block for my Bee. The last 4 are 7449