Replace or new install? I replaced my originals with a $25 set I found through Google a few years ago. I was tired of replacing bulbs every month because the old ones leaked.
The replacements have a genuine glass lens and fit right in the stock location pretty well. I had to make a couple of simple L-brackets to mount them but other than that everything went well.
Bad thing is I tried to find the website where I bought them and can't.

At one time I had two sets of these. They were listed at $25 apiece and I thought that meant for one light. When I received four lights in the mail I learned differently. I used one of the extra ones when a bulb went out last year.
Measure the opening on your fascia and try a Google search. That's how I came across the great deal on mine. I have a 98 Mystique LS.