Help is on the way....

Joni,
You should be able to find out what You have by picking up a copy of " GM restoration parts catalog ".
This should be available at any GM dealer, might have to order it through them. I know a guy who specializes in GM nos and He has the old cat's, but He's heavily biased into the Oldsmobiles. Let Me know if You need anymore help.
Jeff
jkalltheway7@juno.com