Ok just to put things in perspective. The avatar is my motor. Head as described, 2835ProS, highflow exhaust manifold, Greddy plenum, Q45 throttle body, large sparco intercooler and all pipework to match, Z32 airflow, PFC (rb25), 3.5 inch exhaust from the turbo. 285rwkw. 550cc inj setup on current head.
Options:
1) Still have origonal head and all standard extras so if I remove my motor now I will have the full origonal stock motor as a defect motor.
2) 3L $5000-$10000 dollars. Plus loose some of my current pipework.
3) Build a 2.7L RB25 bottom end when mine goes.
4) RB26 Motor as sujested above. Need to buy all the turbos etc etc
5) RB26 Bottom end with my virtual RB26 head. Cheap option however is the bottom end any stronger than stock RB25 or should I say how long would it last running at say at a targeted 320rwkw.