Apparently U.A.S. castle hill has produced a fuel module to lean out the mixure for the 1UZ, i think the guys name is Peter or john that i was speaking to. Apparently this modle is worth about $500 fitted and tuned it has been developed entirely by U.A.S.. My car will not be going to Marks workshop for a little while yet i dont think, i need to get some more info to him on the conversion as he has not attempted one before, and was wanting to do a dry run with an old car that he could cut if need be. I also have not got a price from him yet either and i sorta need to know a fairly spot on figure so that i know my bank ballance can handle it.