Interior Trim Pieces - John B?

[Honey Hole]

Hello all (and especially John B..LOL) -

I'm trying to dress up the old girl '75 20CC, and want to replace the trim piece that runs along the bottom/interior side of the rail cap.

John B - in the pics of your restore job, it looked as if you'd put in a new piece of trim (black).

Question is: Where can I find this stuff?

Thanks again guys... this site has been a great help and reference for me!