powerbronze huggers
 

any opionions on these?

I have one, it is OK, not the best but does the job.

any idea what there undertrays are like, / tail guards,

Powerbronze, by and large, is not a byword of quality :) Thin plastic, not especially good finishing. I do quite like their undertray cosmetically, but I've no idea how it'd actually fit. Think it's an undertray-cutting job.