S2 trailing arms
 

I'm replacing a damaged trailing arm on my 1990 S2. The part number on it is 951.331.514.4R. I found a guy with a salvage yard about an hour away from me who says he has 5 different sets of trailing arms from a 944S, turbos, and an S2. He says the part numbers on all of his are the same, but none of them match mine. Are trailing arms interchangeable between late turbos and S2s? And are there multiple part numbers for these? Does anyone know if other parts numbers will work for S2s? Thanks in advance you guys.

Edit: It turns out the part numbers were the same. I guess he copied it down wrong or something.