you will want to run a minimum amount of vented rotors. Hoppers stoppers will be able to supply you with a VT twin piston arrangement. They use a standard datsun hub coupled to a magna 28mm thick rotor. I have seen this done a few times before. Works a treat. As for the struts, I have upgraded to stanza struts, using my origional lower control arms but using the stanza strut mount on the 120Y ball joint. There is no increase in track. All origional specs. I need to get some neg camber into it through the strut tops. It is the best way as your track and wheelbase remain origional.

Using the Stanza struts makes sense as it uses a 100mm spring V's nearly all others that use a 150mm spring. more room for strut top adjustment. Unless you get a R31 strut modifies for coilovers.