Finally got this S550 Carbon GT350 hood vent on. Inspired by the 13/14 GT500. Took a little work but the end result looks good. Its all 3M double sided so I used adhesion promoter and left some weight on the vent after install to ensure adhesion. You have to bend the stock hood bracket that the OEM vent attaches too. It can be done by hand and returned to stock if you take it off. I noticed there needed to be a little extra clearance where the vent meets the top hose of the coolant expansion tank. Once I filed that down a bit it was good. As always I recommend you get an exposed CF treated to ceramic coating to ensure it has a long healthy life without haze or yellowing.