Originally Posted by ZAHANMA

yes the needswings intake is 3" on the single CAI setup. however, they use a silicone reinforced coupler that is somewhat flexible that passes through the radiator support...after you take out the plastic stock intake piece as VALK suggested...

for the needswings dual CAI they had to reduce the driver's side diameter to 2.75" for some reason...you'll have to ask him about that.