Ive cleaned up a 1972 413 B/RB, Truck, J413TH .. its now re-bored to 60 over with a more aggressive cam and flat head forged pistons with molly rings now. I need to find the CC and the Intake Specifications so I can go searching for the right heads for the job. previous heads have the cast number 2899943 but my searches come up with blanks on the CC, intake, and exhaust amounts.
