Longtubes Makes/Models: FORD - Mustang GT Years: 2011-2012 Engines: 5.0L Application: 2011+ 5.0L Mustang Description: Long Tube Headers Notes: Stainless Longtubes, 1 3/4", 16g primary tubes, 3/8" thick laser-cut flange, with 3" collector. Bolts directly up to Bassani part 5011R3 cat adaptors and 5011R5 exhaust system. Legal in California only for racing vehicles which may never be used upon a highway. " />