cliff-1972

I got a Holset HX 55 I would like to us in a staged system.I have asked the question on other forums before and got mixed remarks about how it would work.I don't know the size of the inducer or the A.R. of it.I just know it is hugh ;D.If someone could tell me how to measure it out I would do this if this would help y'all picture it better.I want to use it on my truck in my sig.Let me know your thoughts positive or negitive Also,is there a better turbo I could use for this staged system?Thanks in advance