I cant find the part numbers for the stock exhaust manifold studs/nuts. Im looking for the ones that conect the cat/Y pipes to the manifold.

thanks

 

Studs GM PART # 10220453

Nuts GM PART # 11516072 (93-95s)

Nuts GM PART # 10255857 (96-97s)

Actually, I think the 96-97 nuts are better in that they say they are flanged nuts. The others are not (I know, because I bought some, once).

 

Thanks shoebox