Tip 1: BE VERY CAREFUL. All of the gauges can possibly break, and the needles can bend out of shape if you apply too much force.
Tip 2: Oil pressure gauge can be a bitch. Watch out when removing this gauge because it's spring loaded and can unwind.
Tip 3: Boost gauge needle is VERY sensitive. DO NOT force. Place two flat headed screw drivers opposite of one another and pry upwards to remove. GENTLY.
Tip 4: CLEAN YOUR HANDS before touching ANY of your new gauges. I personally wore latex gloves to install mine. I recommend the same for you for "pristine" appearance afterwards.
See
Black Cat Custom 's installation tips for further details, or anything I may have missed. They have a nifty section right at the top especially for 1G cars.
Good luck. Post photos when you're done. I'll try and get mine up later tonight.
G.
*Edit: Added proper URL.