This manifold comes ceramic heat coated in black. Made of 321ss and comes with a TiAL 44mm wastegate flange. This Manifold will allow up to a 76mm turbo and a 4 inch down pipe in to a MK3 Supra, SC300/Soarer. This was designed around the MK3 Supra. This is not a Greddy or HKS copy, this is a 6 into 1 Merge collector! Perfect for use with Quick Spool Valve and Billet T4. This type of setup will allow the rev happy 1JZ to pull very hard in the midrange all the way up to high rpm.