I used the 1uz with a 75 shot of nitrous and after enough wear and tear my intake camshaft retainer on the passenger side cylinder bank dessintegrated lol. In all honesty the 1uz is garbage for competive drifting. Too small a power band makes mistakes impossible to recover from. However, it is a very good engine for almost any other application if you have deep pockets (cams, headwork, supercharger?). The 1jzgte vvti is just an all around better engine in every category besides weight and weight distribution. It's high compression and beams (vvti only) architecture gives it an incredibly long power band, 2700 rpm to 7200 rpm for my setup. It's much easier and cheaper to make big power with the jz motors as well.