I got a gsr block in my 99si with a b16 head and obd1 gsr ecu thats chipped...It feels really good..big difference from when it was all b16 but I haven't really been able to race anybody yet. I havent seen a worthy opponent on street yet. and everytime I do we can never get on it cause of traffic or something. I would like to line it up with a gsr teg non turbo.. just to see my car's capabilities