I have Berk HFCs and am looking for a Y-pipe. I would prefer one that does not cost $500, although Tanabe seems to be the best choice in terms of quality/performance. That aside, the two best budget options to me are OBX for $200 Shipped and JIC Magic for $318 Shipped. The Megan Racing and Top speed are other budget options but both look similar and look almost identical to stock other than being larger diameter. All are 2.5" in and 3" out and are available on ebay.
JIC Magic looks more like Tanabe than OBX, and it appears that there would be better flow because the 2 pipes come together at less of an angle on OBX. Trying to decide if the JIC Magic is worth $118 more than the OBX. Any thoughts?
OBX:
OBX EXHAUST Y-PIPE DOWNPIPE NISSAN 370Z INFINITI G37 - eBay (item 220590828306 end time Nov-12-10 14:02:23 PST)
JIC Magic:
JIC-Magic NISSAN 370Z 350Z G35 G37 Stainless Y- Pipe - eBay (item 330441266383 end time Dec-05-10 10:47:50 PST)
Megan:
MEGAN EXHAUST Y-PIPE G37 08+ 2D COUPE V36 VQ37VHR RWD: eBay Motors (item 330491418379 end time Nov-30-10 23:46:46 PST)