changing polished brass tub fixtures

I have an old jacuzzi tub with dated fixtures. I want to change them out to match new faucets and shower fixtures. Brushed nickel or bronze instead of the polished brass. Are there replacment parts out there?

It very much depends on the brand and model...mix and match does work with brands.

Jacuzzi Replacement Parts

I have a Jacuzzi with a Waterfall Rainbow spout. It was Polished Brass and I changed it to Brushed Nickel. Jacuzzi has a web site with replacement pats and a distributor, Manatron Diagnostics (I used the one in Plano) carries most of them or can order it. In my case they had a replacement cover (you have to pry off the old one and the new one goes in it's place and it's held on by doublesided tape). And they also had ne hot/cold covers for the faucets. An easy job to replace.