bass tracker project

hi i am completely new to boats. my dad recently bought a bass tracker project boat. it is a 1986 and there is a slight leak some where and the carpet was ruined and the wood was rotten. we are tearing everything out trying to find the leaks and also replace the carpet on the way back to the finished product. We have found quite a bit of foam rectangle (not the poured foam) and its all water logged and cracked is there any way we can purchase new foam for this? we are trying to get as close to the original foam as possible? any alternatives other than the pour foam?

thanks in advance