Jake - if you buy a harnes from anyone who sez they're selling you a harness for a 60 GMC [might hafta call and see if they have GMC, not just Chev], it will have all the proper plugs required, regardless of the particular style of wire used - the "modernization" is usually plastic coated wire rather than older styles, and the style of outside cable wrap - also addition of "fancy" stuff like fuses and turnsigs and alternator, all of which you've prolly got anyway, or digital dash stuff - go for the best price from any reputeable supplier, unless you want a "perfectly OEM" restoration, and then look for that kinda harness
Bill
