What kind of FXST? I know the FXST/C are the same from the mid 90's to 2000 for sure...cant help you much on the others. What I had done, was to find a dealer/shop that will do exchange on yours. I had the lowers done $200.00 (cnd) labour and taxes in.
I got mine chromed on exchange...basically drove the bike into the shop, went, had lunch picked up the bike and drove home...total cost taxes in was $200.00. Excahnge is the way to go, but you have to shop around as our local area dealers are real reluctant to "tell" you about this as they would rather sell you at full pop. Ironically of the 3 dealers in the province only one HD dealer does this and they are beyond busy! Go figure. It makes a HUGE difference in the look of your bike by the way! Problem is you will want to get your calipers and rotors done when you see how it all looks!