The engine in my Honda Civic Dx special ed. overheated due to a cracked head gasket, and I'm faced with replacing the engine. I thought maybe now is a good time to get an upgrade engine, but being largely uneducated on the subject, I decided to look for some advice as to what engines are available, and at what aproximate cost. Can engines like the one in the integra or the civic si fit in the Dx? What is the quality of the JDM engines compared to other engines by Honda? If anybody has any advice, hints, or tips, please let me know! Thanks.