clear corners and I don't want to have to re-work them to make them fit with a taller intercooler. The Z1 looks ok, but it still looks about 1/2" to 3/4" larger than the stock ducts on all sides. The CXracing intercoolers look interesting in that they are more the stock duct size and not too thick to resist ambient air flow. Z1 says they have improved fin density. Is an improvement more dense, or less dense? They must have some testing to know which way to go, and I'd be interested to see it. Hopefully it is more that just pressure drop thru the intercooler.