yeah, i understand it's an overly large turbo. with potential for big power. and you are spot on with your assessment.
so the steps are,
1, turbo with a Greddy kit. and get it all working as a turbo car.
2,support upgrades, like a Power FC or hks F-con. injectors,oil cooler,etc
3,throw $3000 at the engine, for the top end parts from JUN, and stronger bottom end. - whatever i can find at a good price.
4,put on the badboy turbo. and see what it can do.
5, no doubt the mission would be really,really unhappy at this stage. so one from a Supra,Chaser,or Crown Athlete will work. - not ruling out a powerglide or lenco.
6,Make sure the Diff can hold it, (2way lsd) and the brakes can stop it (larger toyota items).
My car is not intended as a drift car, it is a street car that can hopefully pull a fast timeslip . while being ok for driving daily.
with my old car i was invited to participate in the local drag meets. and would like to take this one. to try legit racing.
moving forward slowly, i'm excited.