Megan Racing RUCA (MRS-MZ-0722) Rear upper control arms
I wanted the PACO rear uppers from Flyin Miata but they were out of stock for ever it seemed, and I needed to take car of my extreme rear camber issue. These did the trick.
I wish I could say I haven't had an issue with them but they have backed off on me twice in the first month I had them on. I keep monitoring them and since then no issues.
The build quality isn't to bad for the price you pay considering the paco's are a bit more money and you need to get the bushings separate.