Fri I bought a set of Jacobs 8.5 spiral wires 159 Canadian. I Started to install and they just would not seem to fit all the way in the hole. I compared them to stock,the boot length is longer and will not seat in the hole. The boot is very soft flexible
rubber not firm enough to pop it on the plug in the hole. Anyone that has done this before knows its a crappy job and you get all scraped up . I have done jobber wires a couple of other times and no probs. Maybe they were for a 4.6 mustang that might be different. Vince