well the fact that all of the mkiv supras(2jz) are fast as hell and have SOO much power is that the people tuning them have bottomless pockets. the mkiv supra is hard to obtain in turbo trim under 25k. so the owners obviously have the cash.
if i had that kind of finacing i would show you proof by making my tail lights get smaller. in no way am i trying to start a pissing contest or be arrogent. just because i belive the 1jz is better i dont ask you to agree, i only ask you to just listen. if i could read japaneese i would search out some dyno graphs from FEAST AUTO or some other JDM tuner. it all boils down to how fast you want to go, or how much power you want to make is how much you will pay.