.Andrew, i bought some 1/2" to 3/4" black automotive trim at PepBoys. It was around 19.00 a roll and I bought two rolls and had some left over. It has an adhesive back on it. Attached is a post I created with some photos of it. If you go down to I believe it is pictures 11thru 14 you can see the trim.

http://www.bbcboards.net/zerothread?id=638659

Let me know if I can be more help.

David