i already performed the rear disc conversion.. the car is currently primered for the mean time, its a 1989 si.... been reseaching on the first gen b16, it only makes 17 hp more than the d16, the only different i can see is it has dohc.'s........ i'm going to try something different and turbo out the d16..... i'm going to have the bottom end rebuilt, i might put oversized valves and put bigger injectors, i have a pr4 ecu which is from an integra with dohc's.......... i'll let you know how it go.....