I am considering purchasing the GPP video to assist my preparation of sprint swimmers. Can someone clarify the SPP training phase and what the best resource CF has on it?

There is loads of information in the archieves about sprint swimming as a few people on this site are VERY accomplished in this area. From what I remember the ideas are applicable to some degree but it is rather the basic idea rather than the actual exercises. In this respect something like the Van’04 download which describes the fundamental ideas as well as the CFTS ebook are probably your best bets.