As mentioned above, your car would not have had them originally, but lots of people do prefer them with !
I have not seen a pair for sale for quite a while and they should be easy to make. For my Cabrio I bought half moon section aluminium strip from Woolies (I think) , rounded the ends off and then glued them on, so no drilling or fiddly clips
You will also need some of the "famous" aluminium 'T' section trim to go between the running boards and the sill, although there are some good rubber or fabric filler trims available, again Woolies I think