Multiple listings for the same brand and type of part merely indicate different suppliers. Unless otherwise noted, they are the same part.
Dansk Exhaust Pipe for Porsche 911
Jp Group Dansk for Porsche 911
"Crossover Exhaust Pipe, Stainless Steel, For 911 1984-1989. 93011116905 930-111-169-05"
This part is no longer available.