This turbo stuff is such a subjective subject---It is so hard to get compressor maps of the older turbos. On top of everything else---we have such a different application than most:
Here is what I have learned--- no think, I have learned so far:
UTV 9406 701100-50?? this is apparently the "frame" that "THUMPER" Turbos are made on,
I have a UTV 9406-91 that has a number 701100-5001 tag on it.
I have found refrence to, -101 and -106 I suspect there is a -96 out there also, there may be others, these were used on big diesel engs lots of them stationalry.
One "tweaks and tunes" these things by changing the turbine housing to determine where and how the power comes in. The compressor or cold side determines how much air it can move.
It takes a lot of phone calls to find some one who can help you where you may not even recognize you need help before the call. There are lots of guys that can help "SOME"---nobody can afford the time to take you from ground zero---read and study Garrett's stuff before you start.