Hi mate i supply cv shafts and joints all day long i have used the gsp ones in my liberty and now in the wrx the lib had more power and did not have one issue at all

im sure outer controll sell gsp and bearing wholesalers i also have used they in 450 rwhp ss with no drammas so im sure you will be fine

if you need hit me a pm ill give you some details ill look arfter you but look for these brands at a minumum or as said get genuine but i guess they are pricey