Man the 2jz is heavy, and I guess the roll cage. but that engine is good no matter what it is in. these transmissions suck. I am hoping for 11s on my future sr20 car, maybe 350hp in a 2000 to 2300 pound 1970's opel gt... But I dont know.
But you can make any car fast, I dont think a 7second car will be streetable, unless your running 40psi and just turn it down.