had a gt25rs something or other ball bearing for a while...nasty little bugger. good for 320 hp maxed out or so. 300zx upgrade turbos. for a dd beater car, its perfect i think, out of all my setups. currently have a t2 flanged greddy 18g externally wastegated. SCREW everything else. more power, less spoolup time. as far as 400hp plus turbos go, this is the way to go. t25s and t28s have their place, but honestly, the nissan community has a warped concept of value for the money, think t28s are worth well over 500 bucks, and their worn out factory turbos available most times. i bought my 18g for 300 bucks, had it rebuilt and reballanced for another 150. off topic rambleing i guess.....but once youve driven a 18g powered sr20, you understand REAL quick. ive completely written off t28s at this point.