Not Ranked
To make a simple jig to cut the tubes--use a square piece just oversize of the header tube size--weld on a piece to clamp the curved piece--cut lengthwise thru the curve with a saw, turn over 90* and cut second side--they all should fit together perfectly--practice on mild steel, stainless is $$$$$
Cut back the joined end to the diameter you want, you will probably want to pretrim so the tig torch will fit in the opening
I've started just buying mine from down in Nascar land!!!
Jerry
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