Thanks for the info guy's. After looking at these light coils I am wondering where they mount. I have two ignition coils know on my stator plate. Does the lighting coil go in between the other two? Do I need to drill and tap some holes on the stator plate?
Hughes, I have some bad news: Your coil will not accept a lighting coil. It uses both coils to know when to generate a spark and for timing. It is not possible that I, or anybody else knows. The good news is: (not Geico) according to KXTaz (an older member here), he had an '87 and he got 'er done by purchasing a '90+ ignition system (stator, plate, flywheel, coil, cdi (ect ect) (they changed drematicly from '90 and up) it will work. That is what he did.
If you are intrested, I switched to PVL a year back and won't go back stock, so I have an entire system if you are intrested. It is swapable without any issues.