td04 9b's are what came on the 3000gt, and it required 2 of them. Tiny things and they require coolant. I think the factory DSM turbo was a TD05 14b or 13g. Pretty much any OEM turbo is going to be water cooled.
Rear mounted turbo FTL. EGT cools down, too much piping causes lag, dirt and funk, oiling is a pain.