Hi Guys,
You can't run 14 inch wheels with stock DR or Z31 front brakes, as they are 274 x 22 rotors and they just don't fit. 15 inch minimum!
If it's for the 1600? 240K used to be the big upgrade for them years ago, or convert LH Torana, as I did to a 180B SSS. Also rear discs would be a big plus. Maybe stock MR/HR brakes would suffice and be best thought of.
Cheers, D