B16A ... if i got one, is there a special one to look for to pass BAR or do any of them work?

i think i've settled on the B16A, i've been offered a ZC by my buddy who does the swaps, but i think B16A is the best overall that would go into my EG hatch. I've read the FAQ about the qualities of the B16A, and I think because of the weight difference between B16 and B18s i'm gonna stick with the B16A.

Does the A/C Compressor from my D16Y7 work with the B series engine? I just wanna get cold air in my face again.

As far as exhaust goes, my stock headers are cracked and rusted to total crap. i'm going to replace them with DC2 headers, but I also have my custom exhaust (2.25" pipe w/Magnaflow Hi-Flow Cat + Muffler) and my muffler guy used the old brace (i think that's what you call the connector which connects the exhaust to the tip of the header) looks kinda like

<O>=============)
[poor depiction of the piece to the exhaust pipe]

is it possible to just buy a bigger one of these? if so i think i'll pick one up and get my muffler guy to weld one on after i get my swap done. thanks again guys, i'm just lookin to have fun with my EG and BAR it!