Wet nitrous shots are horrible. Get it tuned with a dry setup and bigger injectors and dual map sensors. Let the computer adjust fuel levels don't try and guess with a pill size.

The sleeves are the same as a b18b1/a1 sleeve design. It is basically just a bored out b18 block so yes the sleeves are weaker but they can still handle 300whp fine. TUNE DEPENDANT!!! can't stress that enough.