I played this game on my C5 vette, only to find that the the flat panel K&N with modifications to airbox lid was as efficient in delivering cool air as any of the high dollar CAI's made for the C5. Looking at the design of the air intake on the stock R/T it appears that drawing cooler outside from the fender well would be either equal to , or better than some of the CAI's made for the R/t. Wont name names but one in particular sealed off the area where the cone filter resides with a black plastic piece that being black it would heat faster then any other material the designers might have chose and that hot panel would radiate heat into the area where cone filter resides.Irregardless any gains with any of the sytems without other modification are going to be minimal.My C5 picked 27 hp with a 180 stat,my homemade filter lid, a ZO6 catback titanium exhaust and a hypertech tune for 93 octane,Kumho tires improved my 60 ft.s from 2.35 to 2.08 and after spending nearly $2500 including the tires and chrome ZO6 wheels, I reached my goal of getting into the 12's as I ran a disappointing 13.95 @102 bone stock.