I have posted a few threads - one I can think of is titled 'HX35 info' or something similar. Should be able to find it off that.
My experience has been good with the unit I've got. Mine is off a 98 cummins IIRC. WG seems to be set about 19-20 lb which is where it was when I got it. Mine is the 8 blade. The newer versions use a 7 blade impeller and are supposed to be rated for more flow (60 vs 52 lb/sec) but there's some suspicion that the 8 blade is better on low end. I think either would work fine. Be careful if you're looking on ebay or such - lots of HX35 turbos off industrial cummins motors which may or may not have the specs you want and also alot of chinese clones.
Your biggest problem is likely going to be the compressor - it's probably close to twice the diameter of the stock turbo, so you're going to have clearance issues. I'm not sure it would fit on any of the common turbo setups because of that issue. The exhaust side shouldn't be too much of a problem - intake flange is the standard T3, outlet might take some work. Mine had what looked like a 3" v-band flange, but it's not. It's a touch smaller than 3" and shaped differently so a v-band doesn't fit. I wound up welding a pipe to the flange and just taking the 5 bolts that hold the back face of the turbine housing on to remove the whole pipe and flange assembly. But, my setup is a fully custom built up/down pipe and mount flange so it's easier for me to make it fit.