Does anyone know what size the aluminum AC lines are in our cars? Is it the #6 or #8 AC line size? What does that equate to in regular Aluminum tubing OD's and ID's?

And do you have any idea where I can buy the same size aluminum tubing straight so that I can bend it and make my own custom lines?

I have literally spent hours trying to find places that sell normal aluminum tubing without fittings on the end, or that simply sell aluminum AC lines in the sizes that AC lines come in (#4, #6, #8, #10) and I can ready to flip.

Thanks all.