Most tanks will fit the XS but the ones shown are more suitable because they have better fuel capacity than the smaller ones!
Shown are, Trackmaster, C&J teardrop, Champion.
Then shown center mtg kit and taps.

Last pics are the new kit we have made in England for the XS650.
Champion flat track style tank, seat and air box (to hide battery and wiring!) all will fit a STD XS650 perfectly and look just like kenny's!
And because we have them made here you can rely on the quality! Really nice stuff.
They also do a rear frame loop for that finishing touch!