I am sorry if I implied they were the same as JFT. JFT C compound blue (35) is different than all the others, however the Team bomber silver are foam and not rubber based tires, which is what I was referring to. I have a list of the tires and their equivalencies that are available in Japan, that I got from my friend Konosuke (I can't find the list right now, but I'll update whenever I can). The majority of sponge tires come from 2 sources in Japan, Tabata, and Kotobuki Giken, which is a subsidiary of Tabata. Kotobuki tires though, tend to be different from my understanding. Ulti and Kimihiko tires for example, come from Kotobuki and tend to be better because they are "matched" better by shore.