yes i would spend the extra money and keep the tranny you have now,and if you no the tranny is good thats even better you have to change out your front wheel hubs i say find some crx si/dx 89-91 thay are cheaper sense you have the gsr halfshaft you need 94+ integra drivers and passanger not 90-93 sense you already have the halfshaft for 94+.....you if your useing a pr3/pw0 ecu you can change out the injectors from the hf to the new motor but all in all i would keep the hydro tranny the hasport kit is easy bolt on