Epoxy Reshape and OFishl fins

A good buddy of mine who reps for rich price recently brought me home a very early loehr epoxy longboard that was snapped in half. I was able to get about the last 6 feet of the board for a reshape. I have decided to make an egg shape out of it and keep the ofishl boxes that are already in there. I havent really seen a lot of ofishl fins out there and i was wondering whether they were still in business. Plus, since the board was an early loehr creation, I am wondering what type of epoxy foam was used, and whether i should spackle it before i glass it. I am new to epoxy so any info would help. Thanks.