looking for thread that showed how to find the AR on a Turbo
 

I remeber there being a thread recntly that delt with measuring the distance from the center of the ext turbine to the center of the flange and all sorts of other measurements. The picture had a pic of a turbo with green lines between the points that should be measured. They used these measurements to help ID the turbo and find its AR and ect.

Any help finding this thread or any info would be great.

Thnks
~Luke