If I'm spending other people's money
OS giken 3.15 crate engine, Vcam, extensive porting, oversize valves, dual valve springs big exhaust cam 280degree etc
Hypertune plenum with 100mm throttle body
Id2000 injectors, big fuel system, E85
That's if I had endless amount of money
Might want to have a look at the Powertune R34 GTR runs a Brian crower stroker kit