I'm not sure of the exact sizes as I don't recall the measurements but the compressor wheel is a billet 62mm aluminum wheel. .70 ar on compressor side with .68 ar on turbine side.
I bought it from Albert but here are the specs from AGP website.
Compressor Specs:
- AGP Cast T04S ported shroud housing 4" inlet 2.5" outlet
- AGP billet 7075 aluminum compressor wheel 77lbs/min 62.4mm inducer
Turbine Specs:
- AGP Cast T31 4 bolt outlet T3 turbine housing available in .63, and .82 A/R ratios
- AGP Cast 3" V band outlet twin scroll T3 housing available in .55, .75, and 1.00 A/R ratios
- AGP Cast 65mm turbine wheel
Mine is using a t4 .68 AR 3" v-band turbine housing IIRC, it's getting ceramic coated right now so I can't confirm.