The GT28R family has both wastegated as well as free-floating (external wastegated). Also you can get everything from a GT2854R with a 54mm diameter exducer compressor wheel, to the "Disco Potato" GT2860RS on up to the quite large GT2876R.
Garrett has a really good tech section:
http://www.turbobygarrett.com/turbob...o_tech101.html
and Mike K has written an extremely good series of articles in Nissan Performance Mag:
http://www.nissanperformancemag.com/columns/nerds/
Troy
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SHIFT_Happiness
1992 S13 240SX SE Fastback KA24DE 5 spd - Type X Aero & Seibon Carbon Hood & Hatch -soon GT28RS
1993 U13 Altima SE KA24DET 5 spd w/ Nismo LSD - A high hp FWD can be fun (GT30R Turbo inside)
1990 Z32 300ZX VG30DETT 5 spd - 600HP & Very Civilized (working on twin GT28RS turbos)
Still trying to import a 1988 R31 Skyline GTS-R w/ RB20DET-R - only 800 produced (legal under show/display regs)
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