i'm from the philippines and i own a '94 civic hatch. im planning to replace my stock pistons with those from the d16 engine. my car's engine is a PH12, im not sure though if it's similar to a D12. that's where my dillema sets in, according to wikipedia, cylinder bore diameter of a d12 is only 72mm, and stock d16 pistons are 75mm. im wondering if the PH12 motor here in our country has the same bore as to the d12, (which im hoping is not!) i don't want to rebore the engine, coz all i want to do is plug and play. so please, shed me some light if anyone among you guys have the knowledge of our engines here. thanks and more power.