instead of sinking over 6k in a itr motor...you have several options (cheapest to most expensive)

gsr or b16a head on your b18b block...it's pretty strong and cheap to do

turbo your b18b and you can run around 8-10psi and get more power than an itr swap

gsr block/engine tranny...as strong as a lsvtec but costs more

build your own crvtec...180hp 180lb ft tq to the wheels when built correctly on stock internals

itr swap