Used in my LS3 swap. I assembled my 4" air intake using Specter air intake parts, but none of them had a vacuum port. It comes with several different sized connectors to suit all needs BUT THE PIECE SAWS SUPPLIED ARE RUBBISH. I used my own. They are thin at best, I read the comments on this but didn't believe them. So if you don't have a hole saw handy, get one. Other than that, GREAT product.
69 1018TS Performance Intake Kit
9 Review
π§ Improved Performance: K&N Cold Air Intake Kit for 2007-2009 FORD Mustang GT (63-2565)
9 Review
69 9509TTK Performance Intake Kit
9 Review
π K&N Cold Air Intake Kit: Rev Up your 1998-2003 CHEVROLET/GMC (S10 Pickup, Sonoma) with High Performance: Gain Horsepower & Stay Road Legal (57-3025-1)
9 Review