The flange is basically a T3 flange, with a split entry, with more material around the perimeter of it to also have the 4 mounting holes of a T4.
Here is a pic of it:

all markings in blue = the corresponding T3 Dimensions and all red = T4
Side note:
I know everyone is going to say just get a T4 flange, but this is for a special project (not M30) and some T3 turbines could be used and some T4 turbines could be used. and since I am unsure of which turbo I want without actually "feeling" it, I want to have the ability to just bolt on or bolt off with ease.
Sooo,
Where Can I find this thing???



