I am looking for a some advice.
For the rebuild of the drown 1914 runabout I ordered a hook up kit for the gas lights.
What will be the best way to attache the copper pipe to the frame?? I don't like to drill holes in the frame.
Not a direct answer to your question, but I thought copper pipe for acetylene was a no-no:
I don't think copper tubing is compatible with acetylene. You need to use either steel or brass tubing.
A 1914 frame should already have the hole for the clamp. There is one clamp mounted near the brake quadrant. The other clamp is forward near the front of the car and picks up the forward hood shelf bolt. Both of these bolts have a square nut and a cotter pin.
The 1914 tube does not use a Tee fitting. It simply goes from the carbide tank area to the area just below the LH side of the radiator. The rubber tube connects from the tube to the Tee on the radiator.