I'm not an ignition expert but I'd say it's a safe bet you don't have a point type ignition... unless someone has done an engine swap on your car. Truthfully I can't remember if my '86 had points or not but I'm 80% sure it wasn't. Afaik all 'Birds came with electronic ignition after '83???
I'd say that coil would work but you don't need the ballast resistor. Maybe you should touch base with MSD instead of Whitney?
you dont have a points type ignition. go with the msd blaster tfi coil its like 55 it is a direct swap harness just plugs in. that is if you have a distributor if you dont you have coil packs and you cant upgrade those.
Why do people buy these huge coils??? 45,000 volts is not going make you go faster or make a hotter spark, electricity is only going to take as much power to jump the gap on the plug. Adding more voltage is not going to make the plug burn hotter, it's going to make your capacitor work harder to bleed off the ecxess voltage. The only reason you would need something like this is if your engine is turning like 15,000 rpm. So your coil does not fade due to rpm. A larger coil is not going to help you pal, don't waste your money.
An ignition system bleeds off power through a number of different parts. Remember that the spark energy has to go from the coil, through the distributor cap, through the wires, then the plug in order to bridge the gap. That is a lot of resistance bud and that is why aftermarket coild wires etc are superior to stock garbage, because they deliver more energy to the plug. A recent issue of MM&FF posted a .15 s gain by the addition of MSD coil.
"resistance" what kind of answer is that? was your factory coil slowing you down? you must be confused unless you have some crazy 20,000 rpm mn12 (impossible) and .15 from just a coil? no way. unless that fast *** ford is turning major rpm you don't need it, total waste of money. Do you know what happens to a factory coil @ high rpm (im not talking 6-7000)? It can't generate higher voltage due to high speed, it can't recharge fast enough to get it's set voltage before it has to fire again. why do you think bikes have capacitor discharge ignition? no fade. why? perfect start and stop and a good coil but they also are designed to turn like 12,000 rpm. I think you are perfectly fine with a factory coil. unless you have the first 20,000 rpm mn12.
Yes, an easy way to decide what you have (TFI or DIS) is by looking at the coil/coil pack. DIS uses a coil pack, all of the spark plug wires run from it to the spark plugs. TFI uses a coil, with a wire running from it to the distributor cap.