If it's just the pipes under the car I purchased 6' foot lengths from McMaster-Carr to replace mine. If I recall correctly O.D. is 1 3/8". The ribs at the end are not so important in my opinion, I just cut the pipes to length and installed them, never a leak. I did take the opportunity to braid all hoses and double clamped them with SS constant tension clamps.
Julian
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