If i would go all motor this is that i would do
1)new internals lighter stronger i would suggest GTM
2)new fuel pump/injectors
3)lighter flywheel+dual/triple clutch+stronger slave cylinder and better LSD to reduce drive-terrain loss
4)whatever u have on right now
5)carbon fiber wheels if u have the cash
6)better fluids all around
with all that installed i think u can make 400+whp