Borla Mufflers ~ Anyone run one?

I am tempted to pick up a set for a 440 Duster. They have the 14" case length I am looking for.

Anyone ever run one of these "Borla ProXS Mufflers"? From what I can tell they are straight-through AND baffled. I am not sure how that works, I cant find any section or cut away views of them.

Any help?

Borla Muffler:
http://www.summitracing.com/parts/BOR-40359/