I know a few people who've had issues with the eBay DPs... don't be surprised if you have to have a shop make adjustments because it hits the firewall.
The BIC is a nice high quality unit. Whatever you go with I'd look for something with a divorced or parallel wastegate outlet. The divorced gives the wastegate it's own exhaust route which dumps prior to the cat or muffler. Some people dislike the noise though.... In this case a parallel or rerouted (there's another name for them that I can't think of) is the same as a divorced wastegate except that the outlet is routed back into the main exaust system further down stream.
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