Nexxussian:Those turbos are intended mostly for truck-engines Garret and Holset is often used by Volvo and Scania in their engines,Volvo often uses Holset-turbos HX35 and HX40 is used in 7-9 liter engines HX50 55 and 60 is used in 10-16 liter 400-660 HP Scania does mostly use Garret GT40-42-45 and 47's 9-16 liters 400-620 HP engines. KKK is used in among others Mercedes Benz trucks,"my truck" at work is a MB Actros 12 liter V6 430 HP and that one uses a K27 the V8 models 12-14 liters has K28-29-31 depneding on power output.

Here in Sweden the guys who want's real power in their 4 cyl engines uses them to get boost-pressures up to 30-45 psi,the more common turbos for regular cars just don't cut it when You want 1000-1200 HP's out of a 2.0-2.3 liter 4-banger.

This is a Holset HX55 not the biggest around but the best pic I found right now:
[img][/img]

Be good: Hans