the subframe is not needed, we did one in a gs300, you need to get a 2jz with a rear sump it drops right in. We also did another in a SC400 ( owner of Pro Plus) he made 600whp meth and pump and the car is his winter beater!!!
Are you going to turn it into stick or leave it auto?
What you have to do is extend the engine harness ( doctortweek.com)
I have a SC300 and I am debating if to go 1JZ or 2Jz. The car is heavy so I need torque but the car will not be used for racing just a summer ride that looks good