I started out with a small bucket:
And then graduated to one of the tubs that my wife uses to store the Christmas decorations:
Here is the removed welting next to the NOS piece that I took off of the NOS front spoiler. Big difference after all these years. The NOS stuff is very flexible. Unfortunately the repro stuff is made only in grey and you have to paint it or dye it.

Here's how it looks after 5 days: