i know this may sound like a stupid question, but what engines are what codes? i hear a lot of people refering to the engines by their codes. my car is a 94 dx hatch and i believe it's a d15a engine right? also, isn't a stock 99-00 si engine a b16a? correct me if i'm wrong please. also, off hand if anyone knows a lot of the engine codes (b18, etc.)and what honda model they're from, could you inform me please. thanks