I need an NOS Walker (or equivalent)

driver side engine pipe for my 1970 442 Convertible. I have the NOS passenger side, tailpipes, and trumpets in my attic. The passenger side is 2-1/4" with part number 45358. The driver side is 2" into the muffler, but I would rather get the OAI pipe that is 2-1/4" into the muffler. I DO NOT know the part number of either pipe, If someone can help me with both part numbers I would appreciate it. Thank you, Bob