[The n52 rat]

I will be building a turbo kit but first I need help with the dimensions of the flange. After I get the dimensions I will plan on selling the flanges since there currently are none on the market. I will make them where different flange thinnesses for different amounts of power a person will be wanting to make. What I need is a stud whole diameter, stud spacing length, flange length and height, exhaust port inner diameter, and thats really it.