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yes the neo is vvt...but i would not use that head. In regards to the head itself i would go rb26dett all day long...the stock cams are good for 500-600bhp dependant on engine spec.
The Rb30 engine is the ultimate way to go, althoug i would opt for the OS Giken kit, pricey but rock hard short block.
The standard turbo should not be pushed beond 1 bar do to the ceramics and the engine will need a 1.8mm metal head gasket to raise much further with correct fueling although forged pistons and steel rods on the rb25det engine would be advised.
The turbo is a strange mix of t3 and t25, but does not equate to a t28 in the normal sense.
Hope this helps
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