Buying a cheap o2 is better than having an old o2.
I hope it was a denso so the values will match the ecu to provide the best readings .
As they all are not created equal.
If it is locking up the key cylinder pin is disengaging causing the wheel to activate the pin as if the key is removed from the cylinder tumbler.
Try cleaning the cylinder first or go to a lock smith.
agreed get a ripped copy in a different format, or buy an all regional player and add it to the car.
You change formats on the car and you change the nav as well.
I agree short arms (as it has no ramming capability) are crap and should never be installed.
It can give you slightly quicker throttle response and can show slightly elevated numbers on a dyno but only because hte hood is open and getting cooler air. i don't drive with my hood open so it is gettign pure hot air instead. This reduces usuable power by retarding the timing.
Leave the cats and you should be fine.
Get a premade exhaust sytem with mandrel bends and it should free it up nicely.
The 1uz is a strong motor that make little noise under acceleration so don't worry about noise.
I don't think drilling was the best thing to do.
I would fill them as you are now gaining an air escape to cause wind noise.
So in order to do the trunk i will make a whole new post but it is basically 3/8 foam tubing used for homes at a hardware store.
cut a corner of the weather stripping /
Spray the tubing and inside of the weather stripping with more silicone spray.
Insert tubing and pull you hand along the weatherstripping to inch it along and fill.