Thanks for all the help
Just when I thought I had it all figured out I get an Ebay alert for a 996 gauge cluster with all the boxes checked: '99-'01, black faced, manual, cabriolet. It even has the silver trim rings I wanted to buy
Been looking for one like it for months. Bought it on the spot.
So now that I'll have a factory pressure gauge I need to fill the hole where the AEM pressure gauge was going into. I'm thinking oil temperature. I don't think the temp bung will fit on the side of that adapter because it's too long but I might have a solution. Keep you posted.