im planning to do a swap soon with my 1uz, i have done my sc300 to 1jz before. i was really fortunate that my last 1jz swap was from a soarer M/T without tranny and my old car was a stock w58, so just like legos i just plugged it up.
my question is if my sc400 was to go 1 or 2j vvti with a R154

1) would i need a 5spd drive shaft?
2) can i run the jdm AT ECU?
3) if i get a 1jz vvti, i would need a 1jz rear sump assembly?
4) if i was to swap neither a 2jzgte or a 2jzgte vvti, i would need a 2jzGE rear sump?
5) the only differences between to sc3 and sc4 harnesses are the body plugs? because of different pinouts or different plugs?