I spent 50 years stabbing distributors and injector pumps so I can tell all of you it makes a difference, more so with injector lines, they don't bend like wires and in the end, you better have your S*$t straight when you finish no matter which or what you're working on. Number 1 is going to be lined up with #1 from both ends of wire or line or it isn't going to work ! Crank and cam are going to have to be in time right along with what ever is part of the ignition system. DIS systems or not timing is everything and that goes for life too. It doesn't work to be standing in front of a car, truck/bus or train at the wrong time if it's moving either. Like it was said else where in this post, get a SM and put it where the tech specs tell you to put it and wire the way it shows to save yourself a lot of headache.
