Finally found correct wire set for my 86 F150 351W on Amazon.com they were only 27.95 plus shipping (shipping is free if you can wait 5-8 days.)
They are Motorcraft WR 4037 A
Good luck routeing them though.The way they are suppose to go is under all the vacuum hoses and lines off the air pump.I could not even remove the old ones without cutting the ends off first,I ended up rerouteing them over the top,they are a little long that way but with some wire holders they look ok and are not touching anything. George