rotor question

hey peepz .... i waz just wondering .. why is it that the rotors is the back isnt vented but the rotors in the front is vented... is it OK to put vented rotors in the back ? ... i am about to install them hee in da back

http://www.tirerack.com/brakes/ebc/rotors.jsp?autoMake=Acura&autoModel=Integra&autoYear=1990&make=EBC&model=EBC+Sport+Grooved+Rotors

http://www.tirerack.com/images/brakes/ebc/ebc_rotors_goldblack.jpg

THE ONLY REASON THE FRONT IS VENTED IS TO KEEP THE ROTORS COOL AND PLUS ALL THE WEIGHT IS GOING FORWARD SO IT NEEDS TO BE COOLED AND YES YOU CAN PUT VENTED ROTORS IN THE REAR. IT IS PROB. GOING TO IMPROVE STOPPING POWER. YOU CAN GET THE ENDLESS 24 SLIT ROTORS FROM http://www.modacar.com/products/Acura/Integra/MODABRR/ ONLY IF THE CAR IS THE TYPE-R MODEL!