looking at the kits available the link that attaches to the plunger appears to be unique to your game, nice by the way.
and the lever arm assembly/crank looks to be like later Williams.

but looking at the IPDB the under table view looks to have original flipper assemblies that match the generic Bally style.

how bad are your flipper assemblies?

can you post pics of them?

your pin so your call, but apart from a torn coil wrapper and in the second pic it looks like the EOS switch is open, but it could just be the fishpaper blade, the assemblies look in good condition, nothing that a tear down, clean and new EOS switches and coil sleeves should fix.

but can't see the coil stops, they may be fine or they may need replacing?

what are your concerns, like what are/aren't the flippers doing? too strong? too weak? not working?

or do you just want to tidy her up?

and yes have the same windings as Bally