Thread: Recomindations
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      01-10-2013, 08:49 AM   #5
Major General

Drives: 08 E90 M3, 99 E36 M3 Turbo
Join Date: Feb 2011
Location: Concord, NH

iTrader: (3)

Vibrants are very good. Pypes M80 fit also. You want stainless body, 2.5 inch straight through design in a 4 inch case. You can also find some 3.5 inch case resonators, but they will do a little less sound reduction. I run one pair of Vibrant 12 inch and one pair of Top Speed ebay resonators (which are 3.5 inch case). I think the Vibrant are higher quality. You can buy them on Amazon for about $50 each.