The front bearig o.d. is 42mm and the rear bearing o.d. is 52mm.. thats like 5mm on each side .. you're good to go .. (Jus' trying to save you pulling the bearings to check and such ..)

The 750As were 17 ally rims .. the 77-78K 17s were chromed steel rims .. I have some of those .. but the ally ones .. have gone down the alley ..

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