There are at least half a dozen Z guys in your area. If you FUBAR something, I have every confidence you could find the help you need (as long as it's not really BAR). Pull the motor, replace all the stuff you need to replace (turbos and steering rack), and you're set for maybe ~$2-3k. Find the turbos you want, and you can have it done in weeks to days (depending on how much time you spend each day). That way, you know it's done right and you'll have that peace of mind. Plus, you'll appreciate your Z more and you'll learn a lot about just how crazy the Japanese are :)