With a stock suspension, you simply can not get a lot of front camber
I get ~-.9 front and -1.8 rear on my stock suspension
The recommendation I have gotten from several Boxster gurus is to change to lowered springs and replace the struts with Bilstein B7's as the lowest cost with good bang for the buck
It should give me around an addition degree of camber.
You can mark the strut towers for a less aggressive front camber if you want and move them depending of your needs
My alignment with stock suspension is max camber front and rear, no toe in front and a smidge toe rear.
Also you need to think about what car class you want to run in. In our PCA rules, if you want to run in Street Stock, you can add camber plates or change the control arms, or springs, etc. Check the rules for the organisation you are running with
As a side note, MPSS is not a really good track or AX tire. Great street tire, but not track or AX.
Get a 2nd set of wheels, 17" is better and look at Bridgestone Re-71s
Lastly, it is a very slippery slope
