This blanket is for 2nd gen style manifolds. It will not work if you plan on re using the heater hose connections to the cast mounts on the exhaust manifold. This blanket will help lower under hood temperatures. If combined with a blanket for the turbine housing it will drastically help lower under hood temperatures.
This manifold blanket will work on t4 variants. I have likewise has them on a t6 variant but some stretching was required around flange area with the stainless wire connections.