what you need to know is SD (superdrol) is converted into Masteron, and PP is a derivate at methyl-test or "Madol", both compounds have the ability to stick around in your system for up to couple months.
and why are your running PP and SD for 6 weeks? please do some research, and dont hurt yourself. go read my sticky:
http://forums.steroid.com/showthread.php?t=302325
And Can you stack them? yes. Is it a good idea? No and yes. I have done it but i would NOT run it for 6 weeks. 4 weeks at most. are you going to kill your liver? prob not, but it will definetly rise your liver values.... ecspecially if you stack . but you will trash your lipid profiles and your cholesterol will be horrible for a little while after you complete your cycle.
its prob a good idea to wait until you get the job. pick up some creatine bro, and some No2, make sure the diet is in check and hit the gym religously until the arnold clasic. you'll be fine. the real questions is what worth more.... your job? or looking some what big for a comp that comes around every year?
we also dont need this either. dont give out wrong information because you think gear is the only way to go. lets not forget "pro PH's
IS gear. theres nothing "pro" about it. the fact is, its still a steroid, it just happened to slip through the loophole and they can sell it on the open market.
All PH's are not going to "kill" your liver, if anything there less harsh then Dbol, Anadrol and ecspecially winny ( if taken orally) so lets not start throwing out false information until you do a little research