All the data that ECU can output is possible to view, in theory.
It's the software that does the trick (ELMScan Toyota, free demo available, IOS version does not exist)
"Torque" is rather good, IOS version might exist, does not show "advanced" data like torque converter RPM or VSV state. Has strange data like manifold air pressure or barometric sensor which simply do not exist in LS400 vvti.