build your own. use the original container get a linier capacitor 600v x the capacitance you need . mount it in the original condenser . works great for me. cheap also about $2.00 . 1 914 310 7086.
You can look into the Merc O tronic manual to determine which coil you are supposed to be using, this will allow you by using the book to determine the correct condenser to use. What motor, I can look that up for you if you like
EP125 for the Johnson 200, RR 175 or RR176 for the HA39 they are both found it Napa auto-parts….i’m sure Garry Spencer will be posting a chart for you, this information came off his chart 😉