I am planning on building a 5.3 swap car. Don't have the car in mind yet, but I was wondering if you guys could give me some pointers on the best way to buy an engine. A JY around where i'm from (STL,Mo) has a 5.3 for around 600 with everything. I have seen them on craigslist as cheap as 250( needing coil packs, intake,and wiring harness. also says needs an oil pump). Sorry if this is a long post but I basically want to know is it preferred to buy the engine complete or piecing it together. Thanks