Here is the info you need. It might not be the info you want, but.
If you do wind up finding that the legit LED bulbs work acceptably in your lamps, you'll need to
put in a new-type turn signal flasher; that's this one
(2-prong like original; connect its ground wire conveniently.
There are other, non-LED bulbs (without even the potential for a compatibility problem) to make your brake lights and signals brighter; gimme a ping if you wind up wanting that info.