Well, I have been holding off posting about this for some time while I have been sourcing all sorts of stuff for my project. Unfortunately I have some questions that need answers to .This will determine my direction of the build hereon forward. I have sourced and bought a 1996 front sump 1UZ motor. It has 91 000km on her and is in superb condition. I have bench started her , all pressures and temps are spot on. The motor was sourced from Japan directly. I will be using a local South African Lexus V8 specific engine management system, map based and specifically designed to control all aspects of the engine and auto box. I will not be using the auto box though and have opted for the venerable w58 Supra box with the 0.78 odd final fifth ratio. I manged to source cad drawings for the w58 to U1 auto bell housing adapter for the princely sum of 20US. It is being made as I type this. Some questions to the embers here if you guys don`t mind. I have searched here no for the last two or so weeks and have not really managed to find specific answers yet. Firstly I am thinking of a single turbo setup for the stock engine AS IS. I do not want to open the engine for any reason , not even to change the head gaskets. Will the engine be capable of withstanding boost pressures of about 5 psi on a stock engine ? Secondly are the standard pistons up to the task on a well tuned setup ? Obviously detonation and stuff like that will destroy them in seconds. Why I ask is that we have a million "tuners" here and everyone has his own opinion as to this.I tend to not listen to these guys and would prefer solid info from you guys. Basically , will the engine handle 4 to 5 psi boost with good inter cooling with the std 10:1 cr , short duration smog cams and std. head gaskets ? Secondly will the w58 gearbox handle the torque of such an engine reliably ? Gearboxes are extremely strong components but I have seen a lot of internet topics where the w58 box is slated as a bit of a girl when it comes to torque from a turbo 1UZ. Thanks guys. BK.