1985 cabriolet outer sills

Hi  I’m needing to fit a pair of sills onto my mk1 cabrio where’s best place to get them I’ve looked at some on Facebook and there saying the cabrio has a different profile from  the ones on a  2 door  thanks in adavnce 

https://www.vwheritage.com/golf-cabriolet/mk1-golf-cabrio-panels/rear-arches-sills