the wiring harness is a custom-made wiring harness that came with a car when I bought it I don't know exactly the mileage on the engine but the engine is very clean i will also include the entire exhaust system this is whst youll get for that price .you'll get the 4.9 engine ,engine mounts new alternator new starter new a/c compressor custom wiring harness computer flywheel and the entire exhaust system this car was a 4.9 v8 and I am doing a Northstar swap on it so I'm selling all the parts that came with it when I purchased it I'm trying to get something close to a 1000
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