http://startingstrength.wikia.com/wiki/Max-OT
I first read about it at the SS wiki site and I got the PDF for max-ot somewhere online but you can get it form AST's website but you have to sign up, it's free though. You can google Max-Ot pdf and you should be able to find it easy without having to register.
It's really not all that different from 531 just no AMRAP and you could make week to week progress. It is more BB geared though but on the strength end.