That turbine is way too big for a drivable single even with the smaller .9 housing for it, the power window for that charger is way too small. if you are looking for a good s400 for the street stay with the 83/74 turbine 65mm or 67mm compressor wheel. A good s300 will be a much better choice a 62 63 or 64 mm charger with either the 68 or 71 turbine in a .91 t4 if your looking on the cheap side. If not the .83 t4 is the best choice.

Anybody know anything about this turbo? I also found a S366 to run as a single but O saw this one but i dont have any clue on it's specs. Also should I get a external waste gate If i do a s300. I have an automatic transmission.

http://www.ebay.com/itm/CAT-Turbocharger-Caterpillar-turbo-A-R-300-t3-t4-5-to-7-pnd-internal-waistgate-/171655880542?pt=Motors_Car_Truck_Parts_Accessories&hash=item27f77cdf5e&vxp=mtr

A 66 would flow the air, what exhaust wheel and housing? Ya Id likely get a gate to control boost. You can also use the fuel plate if you need too if a gate is out of budget for a bit.

Well that turbo I posted I have no idea on the spec that's what I was wondering. I did find another one which is one i would probably run its just a little more.

http://www.ebay.com/itm/Borg-Warner-S366-T4-91-A-R-Turbocharger-91-79-Extended-Tip/221423406855?_trksid=p2047675.c100005.m1851&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D28796%26meid%3Db966cb66394f4a188960354f860f18b9%26pid%3D100005%26rk%3D1%26rkt%3D6%26sd%3D291162468700&rt=nc