The Motronic ECU used in the V6 is a learning computer and after approx. 150 milers it picks up on the different things added and they are good for up to 290-300bhp if remapped or chipped professionally. So I reckon after a trip[ to Courtenay Sport for a remap (£290) it would work out to be one of the cheapest Turbo conversion I think I've heard of lol, especially considering I would have more BHP than a 2.5 single turbo Skyline GT 33 Type M
Heres a shot of the turbo on one of the two, three branch manifolds.
So if this was to be taken to the max you could fit one on either side of the engine
Rumours from Club Calibra say that there is a couple of guys that have done this and acheived 300bhp on a standard 208bhp 3.0ltr block and areas of over 360bhp when tuned and have compression lowered for a higher boost from the turbo's.