Yeh that's what I thought, all of what I listed above are different flanges and they all have different bolt pattern and measurements

Hi Wardy i think its the flange pattern,where the turbo connects to the manifold example when i buy the turbo 2871r and then buy the manifold do i have to tell them that the manifold is to suit the 2871r

I'm not quite sure what you mean. Do you mean the flange pattern?
If so there are alot of different ones, most common are t25, t28, t3,t4,t6 and v band.

hi guys do all turbos have the same measurements to connect to the manifold meaning the different sizes in turbos