I just installed my second pertronix in a 69 Gt yesterday and it took all of 15 minutes to do. My advise to you is to use a magnetic tipped screwdriver because the mounting screws are very small. Installation is simple, first disconnect wire at negative side of coil, remove distributor cap from distributor body, remove rotor button, remove condenser and points (3 screws all together), remove the wire terminal(the piece where the wires exit the distributor), install the pertronix mounting plate(looks like the point set base)with the 2 screws included, then the electronic module mounts on that with 2 nuts provided(i used a 5/16th nut driver), next a black plastic piece fits on the distributor shaft just beneath the rotor button, install the rotor button, route the 2 wires out the distributor cap (it comes with a form fitted rubber plug to replace the old points terminal), install the distributor cap, then it's a matter of running the red wire to the (+) side of the coil and the black wire to the (-) side. If i can do it, you can do it...and were always here on the forum to help