Not familiar with that motor but I believe you have one of these twin coils. If that is correct the OMC substitution doesn’t apply. Replacement coils are available at $125.00 on up, so you first want to be sure yours is really bad. So how did you determine yours is bad. Sometime today I’ll dig out one of the motors I have with that coil, see what the secondarys read, and post it. If you have twin coils, I’ll show you how they can be substituted.
A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.