promise you i search and could not find exactly what i was looking for.... i currently have a 2004 mazda 3 hatch and the 2.3 in it i believe is do for replacing i may be able to rebuild it. anyways onto the point if i were to come accross a speed3 engine what would i need other then the engine to do a swap into my vehicle is it worth it and is there possibly i write up that someone can kindly direct me too =)