i would say the twin turbo one you're thinking of is the 1jz as that's most commonly referred to....
as always i have a biased opinion.. get another 7mgte that's spun a rod slightly and rebuild it from the ground up
with the 1jz you have quite a bit of wiring to get it to work.... imo... those swaps for me are just too hard lol... alot of ppl are in the process of doing them but i like easy jobs hehe