Hey Dan Go with the RB30 build & be a little different & go with the RB26 top end with a large single turbo on it
I was looking into it & had got an idea of price of around 6K with out turbo & computer just for the motor build & head/manifolds with no turbos.
I have a lot of info on it if ur keen let me know, mind you that build was with head port work & a 30 thou over on the block with pistons & rods with a fully balanced bottem end I got told it should be good for around 350 at the wheels with the right set up injectors & cooler, only prob with the big single & head port work is it will be very lagie but once it on hold on I don't have the money to do what I wanted to do now but looking into KAPA with super charger kits