if i was going to build my motor again, which i dont realy plan on doing or what to do (costs to much) this is what i would do.
either nitto 3.2l or os giken 3.15l bottom end
full cleaned and prepped 26 head with hks v cam pro
GTRS twin turbos or trust t617s or what ever they are called
manifolds all port matched and that crap
nismo or hypertune plenum
dry sumped
hollinger box and upgraded diffs with good ratios.
i think the setup would go quite well, good response, good power and hopefully pretty reliable