I bought one of those ORANGE Ign. coils on ebey. High performance type. It cost 19.99, and it does deliver a hotter spark. I compared my stock coil w, a blue to yellow spark, and the hi perf. one gives a pure white spark. The only draw back is the plug boot. Theirs is made of hard styrene plastic and did not last 2 months. It will simply un screw from the wire, and you can trim back 1/2" to screw your factory boot on in its place. Glad to here you got your set up working well!