powermax cam??

Hey guys I have a stock block my cousin gave me a while back he had some exhaust mods and cobra intake intake and other normal minor upgrades.. when he parted his mustang i took his engine..He told me he had a slightly higher cam than the e-303... but not sure what these numbers mean or what cam it is..he had stock heads and everything was running great and it sounded nice...I have my e-303 cam on my mustang now w a paxton2000.. would this cam be safe for my setup? it a Cranes cam???these are some numbers i found on the cam

449359
442302
POWERMAX20
CR

anyone know what they mean???thanks

nothing???? ANYONE??