Update. I purchased a small roll of cunifer but the color was just too copper brassy for my liking. My journey continued and then about two or three weeks ago i stumbled on an ebay seller from China that made steel tubing in 25 ft rolls already yellow zinc plated. He referred to it as rainbow zinc but the pictures looked close enough to the traditional yellow zinc to give it a try. I got 50 ft of 3/16 for brake, clutch and return lines, 25 ft of 5/16 for fuel, and 25 ft of 1/4 for a vapor line plus about 40 fittings I'll probably never use. He was really nice and gave me a discount totaled 150.00 with tax and international shipping included. If you want 5/16 you'll have to ask as it wasnt a direct listing I could find. They just showed up today, about two weeks journey and would you know it, they look like the pics and are pretty damn close to what you would expect. Check it out if anyone wants to do similar. I picked up straightening, bending, and flaring tools to try and tackle this myself over the next month or so once I pull everything for the headers. eBay3/16” Car Brake Fuel Line Tubing Kit 25ft Coil Roll Zinc...Specification: Material: Steel Zinc Brake Line Tubing Diameter: 3/16 In. O.D. ( Note:3/16”≠1/4” ) Brake Line Tubing Wall Thickness: .028 In. Brake Line Length: 25 FT Coils ( 25ft=300inch=7.62M ) Type: