power commander

i have recently bought a 2008 r6s and to my knowledge is basically an 05 yzf-r6, does that mean i can use a power commander 3 for an 03 r6, for my 08 r6s? i am asking this only because i have found a used one for an 03 r6, but if you have any info that could help me to find out which one i need...

I am new to the game and had a few questions I searched for info on power commanders I have an 08 R6s Is it the power commander 5 that I want, or is it the power commander 3 pc usb? I also wanted to know what everyone thinks is the best exhaust? I had no luck finding any answers SKAHN21