Deck mount tub filler

[P14224]

So my girlfriend has a big soaking tub that has a ugly deck-mounted brass spout and knobs . Kohler#k-15295. I would like to replace with something other and I cant seem to find the model on their website so I figured its been discontinued. My question is can I just replace the knobs,filler spout and trim, and with what model#? Other models compatible?
I don't want to rip into the tile work...THANKS