luckily my buddy who has been building rods and bikes for decades will be over seeing me as i stumble through both of my builds. i actually found a part on speed of color or trojan horse i forget which one that is a bracket made specifically for putting the XB tail on the CR, looks like they just mount the lower part as is and the bracket spans the gap on the top. and the seat hides it all and lines up perfect. but it was like 200 euro's so 300ish bucks? F That price.