I'm always looking for sources for clear cable housing with the inner plastic lining for smooth cable action. The ones that were used on early to mid 80's bikes, where you can see the silver, coiled, flat spring from the outside through the clear plastic outer sleeve. Only regular source I can find is Pork Chop BMX from eBay, but I have found a set from DiaCompe too, a couple of years ago.
Every time I asked for some from LBS's they tend to always give me a weird look then promise to check if they still have the big spool they remember they had of it somewhere in the shop or at shop owner's house,......... but of course they never come up with it....... the hoarders.....