Good morning all,

I am in the process of finishing my fuel cell in the rear trunk area and will be retaining the stock hardline for the gas fill. An aluminum radiator pipe will come off the cell and connect to the stock upper portion with a flex section.

My question is what diameter is the stock gas fill hardline? 1 1/4, 1 1/2, 1 3/4, or 2" seem to be the common sizes. Also believe they go off ID size if someone could measure it for me quick.

Thanks in advance