If you want people to look under the hood and go damn, the rb motor is the way to go....if you have 16,000+ to do it with "
www.afterdarktuning.com".
Personally, I think you would get more respect if you turbo the motor that came with the car. People aren't proud enough of the ka motor lineup. Put a nice HKS T-71 "I think that its, not exactly sure, its the turbo the supra owners do when converting to single turbo setup" on the beast and build the fmu with internals up and its mean.
Just my two cents though, just remember anything is possible with the right amount of $$$$$$$$