fanaticstang15

I am doing a conversion from a v6 to a 4.6L SOHC in my '96. I've found a wiring harness that includes the following :THIS ISMOST WIRNG IN THE CAR EXCEPT THE DOORS AND CRASH SENSORS. ALSO INLCUDES COMPUTER ,FUSES BOXES,RELAYS,SENSORS AND CONTROL BOXES

The guy is asking for $500, my question would be is this a reasonable price and also how much of this do I need for the conversion, the obvious being the harness and the computer?
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