I searched and got pissed by finding nothing and my car is at home so i cant go measure. What is is Diamter of a big shaft and a small shaft turbo? I think the standard small is .25 right?

And another question. I have a 60 trim T04E (2.290 in. 2.950ex) Can i have my T04E cover machined to accept a 66mm inducer wheel (like a t04r wheel)? Or is that out of the realm of reality?

The T04r uses a T04s compressor cover and ive read there is minimal size difference of the T04e vs the T04s.
My housing is a 4" inlet Race Cone style or whatever so there is alot of material.

thanks zac