well in the qbp catalog, i'd say more than in any one spot, you'll find a lot of stuff you can use, at decent rates, whose complete technical information is readily available. that way you can easily match up x number with x number with x number without having to research every part to make sure it fits. as for chain line thats really give and take. some people have tons of problems with it, others don't. my chainline was perfect the first time without any adjustments and i doubt worrying about it before hand would've made much a difference.