if he had a 3rd gen teg, he would have posted this in the 3rd gen teg forum
here are your answers...
for the valve cover, as someone else mentioned, Aircraft Remover. can be found at any automotive store, walmart etc. for $5-$8. works well, but be patient with it. also, use it in a well ventilated area, especially if you don't want to spend your afternoon in the ER hooked up to oxygen tubes etc. (lol)
for the strut bar, depending on the bar, it won't fit. you have ABS (hence the master cylinder on both sides of the engine compartment) you've got a master cylinder for your regular brakes/booster setup, and a master cylinder for your ABS system. SOME (and by SOME, i mean VERY VERY FEW) 90-93 teg strut bars that were made for NON-ABS cars will work, but MOST won't. You'll have to hunt down a strut bar that was made for a 90-93 Integra with ABS. they are hard to find, but Skunk2 and GReddy/Trust make them. BUT, good luck finding either, as both are discontinued (at least the GReddy/Trust bar is discontinued). There are a few others that fit, but again, MOST are discontinued. here is a thread on G2IC about strut bars that fit with ABS equipped G2's...
http://www.g2ic.com/forums/showthread.php?t=3053&highlight=strut+bar+abs
from member G2Guru:
Here's the run down of strut bars that fit 90-93 Tegs with ABS from most to least expensive.
GAB $200
Lightspeed $160
Spoon $150
Z-Speed $130
Greddy/Trust $100
Momocourse $100
Tenzo R $90
Matrix $75
OBX-R $60
Pilot Motorsports $60
please note, those prices are current as of 2001 (!!!!) most/all of those bars are discontinued so prices will either be cheaper or [MUCH] more expensive, depending on the brand. if you can find the first 5 on the list, i can guarantee you'll pay almost double what the prices above were mentioned.
hope that helped.