Hsv brakes onto lx

Hey guys first time user long time reader seemed like a logical place to go for advice
This has probably been done to death but need some advice on brake setup
I've got a 9 inch running holden flanges as it still got Torry drum brakes but want to upgrade to discs could I fit a disc setup of a hsv possibly 315mm or the like as I've already got the flanges to accept holden backing plate I'm going to run commy stud pattern as I've got one of those useless UPC kits (got for nothing)and hoping to utilise the hub and possibly caliper adaptor to run 330mm on the front. The UPC kit utilises ve calipers? so can I just buy a 330 setup of a ve hsv and possibly the rears as well and fit to my torrie