I Just got off the phone with about the 4th person I have asked.
Basically what I have that I KNOW I can get, are the Cusco top plates. Says they work with OEM shafts and non progressive springs. I havent been able to confirm 100% that they work with OEM springs. I have put it out there to a bunch of people and no one has been able to tell me for sure. I hate to sell them to you and have them not work, BUT, I havent seen any evidence that they dont work with OEM springs, as I would think it would say somewhere if they didnt, and I am pretty sure I have seen people run them with the OEM springs.
Whiteline appears to only make a front camber plate, but its a good bit more money.
In any case they are in stock. Ill shoot you a PM with the pricing.