I’m finishing off a Stylus which has had at least two previous owner attempts.
It has a 1600 Ford crossflow with five speed type nine box and cable clutch.Question is which starter motor as I’m not sure what flywheel it has.It had a pre engaged fitted but noisy operation.Swapped for an old inertia which is quiet but has the annoying throw out whilst attempting to start.One is a ten tooth pinion the other is nine…which might explain the noise.
Is there an easy way to work it out,maybe through the starter mounting hole.Just be nice if a pre engaged would fit,work quietly and properly.

this may help
https://classicroverforum.net/index.php?threads/ring-gears-for-inertia-vs-pre-engaged-starter-motors.35876/

Thanks for that