im not sure if mine is an erz but i bought an ebay catback from someone on nasioc in the MAIC section for $70 and i havent had a complaint yet. fitment was good, sounds great, havent gotten pulled over yet lol.

actually the classifieds in the mid atlantic section are better than ebay IMO. i got a perrin 1 piece downpipe for $100 basically (i buy and sell and barter alot on there lol). if you can find a used one for the same price locally, go for it. much easier than paying shipping and waiting weeks for it, if they have it in stock that is.

but thats just my .02