Yes, it is the diecast model I am looking for. I cannot find a new replacement for this part. Maybe I am overlooking something? Part number or parts store to purchase from would be helpful. Thanks.
This is not a normal wear item that you'll find at a parts store. The last Olds V8 that used this part was made in 1990. If you're lucky, you MAY find a new one on a shelf at a dealership. Ask for an oil filter adapter for an Olds 307 (VIN Y) in a 1990 Custom Cruiser. Any GM parts counter should be able to look this up, but don't hold your breath.
Are you adverse to used parts? There are millions of these in wrecking yards.