Need P/N for direct replacement DynoMAX Muffler, 1984 325e

[unibagel]

I'm looking to swap out my rusty stock single inlet muffler (1984 325e) with a direct replacement Walker DynoMAX Turbo Muffler. Could anyone give me the P/N they used?

I measured the OD of the stock pipe and it's 2". The Stock muffler measures 20"L x 4.5"H x 11"W. I looked at the Dynomax website but it doesn't list a direct replacement.

Thanks for your help!
Chris