yeah man. GSR is ONE KIND of motor. b18c1 period. theres no better kind of GSR they are all the same.
also, try looking into homemadeturbo.com. Maybe youll be able to throw some kinda junkyard turbo setup on there. A prefab kit is no better, just a little less work for a WHOLE LOT more money. also, if you know anyone from hondatech, they might be able to get you a hookup on the DRAG turbo kit cauyse theres a place selling htem really reall really cheap to ht members, if hteyre still doing it.
www.honda-tech.com is a good place to ask questions too. Theyre a more advanced forum as far as pure speed/ functional cars.