Does anybody know if led signals and brake bulbs in stock housing work O.K?

 

They will work. All you need is the electronic flasher. I am not sure what year your car is but the 98 - 02 need an EL12 flasher.

 

they work in my 97 too but that has the DRLs. I have changed all the bulbs over and they swap fine, but you are going to want some expensive ones that are pretty tall for the turn signals.

I have 40 LED bulbs up there I think, but I had to cut the bottom out of the light housing so you will want to measure and go smaller.