Issue is important for me because I suffer the same problem and has bought close to r200 of 300zx model 88, but until now did not try it but now I am in trouble with the Differential Skyline GTS Model 92 LS d, but very bad in terms of speed of 140 km and the RPM 4500 almost gear propelled 25 turbo engine and Skyline GTS Turbo, but my advice in r200 of the X-Z 300 Model 88 for he is the only control on the 240z.