I got this whole kit for under $300 they took 10% off the whole order.
BMW E36 328/M3 Brake Duct Brackets
[b]BMW E36 Brake Duct Brackets
3” Aerospace Grade Brake Ducting
url=http://www.gruvenparts.com/website/cart/cart.php?target=product&product_id=403&category_id=61]
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Brake Duct Mounting Flanges
Brake Duct Attaching Flanges – Special Group Buy Pricing in Effect !