so this is the new one you want to get and it comes with a CF bridge
http://www.sapphiretech.com/presentation/product/product_index.aspx?pid=2039&lid=1
this is your current GPU
http://www.newegg.com/Product/Product.aspx?Item=N82E16814202059&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=
they both have CF support so that works
power supply has 62 amps on the 12v rail and has 4x6+2 pins for the gpus.
i am assuming if one of those cards fit then the otherone will. you can remove drive bays if needed. it says it will fit by 2mm
motherboard has CF support