It needs the same things it always needed:

Driveshaft-$300
Single turbo (since the stock twins are prob shot)-$2500 (turbo, manny, wastegate, bov, oil lines, BOV)
Front Main seal(common problem in supras) $20
Cam Seals-$40
USDM water pump and Pulle-$300
Timing belt-$100

Speedo and tach dont work

so that puts you at around $13,000 for the car if you do the work yourself. Still too much money, its worth $5000 in its current condition, no more, no less.

COnsidering you can find a shell for $2000, you can almost build the car for that price with stock twins.

I mean you get a decent suspension and $900 wheels out of it, but $9500 is alot for a car needing alot of work