text: The turbocharged RB30ET (producing ) was found only in the VL Commodore due to the conditions set out by Holden to Nissan in the contract to supply engines. It consists of a lower compression RB30E bottom end, more powerful oil pump, knock sensor, Garrett T3 turbocharger,  injectors, different intake manifold and supporting ECU. The motor itself is still popular today in Australian and New Zealand motorsport and drag racing in VL Commodores, R31 Skylines and swaps in other vehicles.
  Nissan Special Vehicles Division Australia produced two limited models of R31 Skylines, the GTS1 and GTS2. These contained slightly more powerful RB30E engines, containing longer opening duration cams and better flowing exhausts.
  GTS1 RB30E - injected single-cam  at 5,500 rpm,  at 3,500 rpm) - special cam profile, special exhaust
  GTS2 RB30E - injected single-cam  at 5,600 rpm,  at 4,400 rpm) - special cam profile, special exhaust, piggy back computer, valve porting
  RB30DE
  These rare engines were used in the Tommykaira M30 based on the R31 Skyline GTS and R32 Skyline GTSt. For the R31 M30, a modified RB20DE head was bolted onto the RB30E block. It delivered  at 7000 rpm and  at 4800 rpm.
  For the R32 M30, the bore was enlarged to 87 mm and increased the displacement to 3030 cc. The head was also replaced with RB26DE head. This new version delivered  at 7200 rpm and  at 6100 rpm.
  More commonly a hybrid conversion with an RB30E block and a twin cam RB25 head without a turbo is also used as a basis for the RB30DE.