Ultimx.. uhmmm ever heard of engine swaps??? :doh: jus cuz a car has a Si doesn't mean it's a Si... someone could of put another engine in the car... the easiest and best way to know is to check the vin... it will tell you what the car is... and THEN you can check the engine so see if it got the original engine in it... Now reason.. if your friend totalled his teg just offer to buy the whole teg off of him... that would be the best thing to do... but if you dont want the whole car or dont have the space... i cant really tell ou what parts you needwithout knowing what trim your car is... if you have a 5 spd then you wont have to worry about the hubs or knuckles but if you got a 4 spd then you should prolly get em... also being that it is a 2000 it is prolly an OBD2 which is a whole lot of other crap with it too... you will have to decide if you want to make the engine obd0 or make your car obd2... also the tranny is prolly hydrolic (sorry cant spell :dunno: ) so that is more bullsh*t you gotta do there... but once again it all depends on your plans for the car and what you want to do... also what trim your car is...