I've done a little research on the 24 liberator. the first to use it for sub recon were the brits. it performed exceptional well due to its range, and payload capacitie. there were various models. but the c i believa or maybe d was when the army insisted on turbocharging the engines to bring the speed up from 273 to 303 mph. if your interested inmore check out the 376 heavy bombardments website. most highly decorated unit in WWII
