Sort of. It's the same thread pitch but the reverse lockout for subaru is a smaller diameter than the st/rs.
You need an adapter or extension that fits the reverse lockout then you can use any 12x1.25 knob.
I have an eBay reverse lockout adapter and twm extension topped with cobb sti knob.
This was before WC Lathe Werks was making adapter/extensions for
pommeau de vitesse 208.
I will be ordering a new extension from him and I'm really liking the titanium but I can't justify the cost just yet.
He also started making reverse lockouts too!