The nice thing about an XS2 set is it has the newer head gasket style (larger) so can be used for all the newer models. I also like the fact that many of the o-rings are red silicone (I think), just like originals. That Athena kit comes with mostly black o-rings and I've found the ones for behind the points and advance housings don't hold up. They are fine as long as you don't disturb the housings but remove them and you'll find the o-ring has deformed, become square profiled, and can't be re-used. All the red originals I've encountered were still round and could be re-used if need be. In fact, I replaced some of the black deformed ones with some old (still round) originals and they worked fine.