I've heard elsewhere the fairings kits from China are meant to be ok. You have to use the complete kit though the fitting problems apparently sprout from mixing the original parts with the aftermarket parts. That said though a lot of motorcycle stuff from China is knocked out from multiple factories (they even rip each other off) so 1 kit maybe decent and 1 may not (even though they appear identical), getting the good parts can be pot luck unless you know someone who bought from a certain seller already and did good.

As you only want to do the bottoms though it'd be cheaper to rattle can it, however if you do replace all the fairings when you come to sell it you have a set of original perfect condition fairings to put on it.