many thanks to dohcvtec_Accord for helpin with my engine swap question . another thing i was wondering is : when i am finished with the engine swap , will i have to buy upgraded parts (i.e. air filter , cat. converter) for my model of car or for the model of engine and the car it originally came from ? i'm rather new to all of this and would rather be clear on what i am doing that learn from trial and error . again , any comments or suggestions are most welcomed .