rip it out.
chuck in a r33 rb25det and forge it.
neo's can be difficult to work on.
but if u only want 350ish hp, grab a power fc, clutch, injectors, gt35r, wastegate, FMIC, new dump pipe/hi mount manifold, tune, plazmaman plenum and your laughing.
thats pretty mild tho.
forge a r33 rb engine