You guys know jack **** - about Blasts and XBs - lol - a Blast is half a 9 with a more conservative head and cam - lol - that XBBlast is currently raced by James P - the motor built by the Hoban Brothers with about 50hp, they used the XB chasis and wheels to lighten the bike considerably, the XB chasis being Alum is actually lighter than the Blast chasis by over 20 lbs. I personally think the XBR fairing is too big for a Blast proportionally, but the S would work and is lighter anyway. That and other XBBlasts race in the singles groups in the tracks in Cali, besides regular Blasts, Ascots and such - lol - and who wants a pre 2008 firebolt or S anyway - bad as a Harley - in that you'll always be working on it. If you can find a 2008 or up - cherish them - they are near perfect - about as reliable as a Blast - lol
EZ