Yes you can CS an auto...last winter i did a Cs project in one of my small setups with two different strains..i took pollen from one auto and dusted the other strain and it made seeds..i let it grow long as it would stay alive so it would make viable seeds...so then this past summer i took 3 of those seeds and stuck em outside to test run them to see if they went into bloom like an auto does and they all 3 did..within 4 weeks they was in bloom...i used some same nutes as i did with other reg fem plants but didnt do to much special things with em..just kinda let em go to see what happened..turned out pretty good..nice hard budz..normal leafs..THC was good too...i think i have a couple pics of them in my albums or in my photos