Yamaha Pulser tuner conundrum

[quiverdog]

I'm looking to replace the tuners on my ~1980 Yamaha Pulser 400, as the current ones are quite heavy and have a rattle/buzz I can't get rid of. It's a pretty faithful replica of a '72-73 Precision with the big trapezoidal tuners - I ordered some Hipshot 1/2" Ultralites but they were too small and the keys looked hilariously stubby. The Gotoh GB640's seem like they'd fit correctly minus the screw holes (they have the hexagonal 50s-60s plates), but are only available in nickel instead of the '70s chrome.

 

Anyone have experience swapping tuners on a Pulser or actual '70s Fender? And how out of place would nickel Gotohs look on a '70s bass if those are my only option?