Am fortunate to have two GSs a 04 1150 36k and a 06 1150 adv 47k both twin spark. Both started running ruff dropping a couple hundred rpms at idle and missing under load. The coil sticks (one each) on both bikes went bad within a couple weeks so thats 2 times 140.00 or 4 times if ones to replace them all. I didnt want to go back to the coil sticks because of the fail rate and the price so I started thinking what kind of alternative action I could take. I wanted a coil that was small available everyware and (cheep) (inexpensive) reasonably priced, I found it 1999- to present 5.4 Ford F-150s C.O.P. coils checked the specs (Ohms) close enough and at 30 bucks each its worth a try. Pick-up two coils from the parts house and a wire harness from a ford 5.4 at the auto recyclers for the connectors on the coils. Plug wires Ive had laying around. I didnt want to cut the bikes wiring in case I wanted to ever go back to the stick coils, so I got four sub-d connectors that fit right into the bikes coil connectors. Hook it up and Ive got spark The coil are zippy tied to the frame for now if this works out Ill mount them-up this winter. Got about 200 miles so far alls well. 2 coils 60.00 Wire harness 10.00 Sub-d connectors 2.00 Plug wires ????