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I have the Autometer Z-series, boost, pyro, and trans temp in my A-pillar, and will have a 0-35 PSI boost gauge in my cubby hole sometime this week for a fuel pressure gauge. I did considerable research on this subject, and found that there is no major problem running a boost gauge as a fuel PSI gauge, and since I wanted them all to be identical, and didn't want to spend $180+ for the electric z-series FP gauge, I went this route. I have two freinds who have the Autometer Ultralights, and they look really good in the a-pillar, however I like the way mine look stock by being black... the ultralights are more flashy, and aren't for me.
As far as placement, as I said, I have the Pyro, 0-60 PSI boost, and Trans temp gauges in the a-pillar, in that order, from bottom to top. The pyro took a while to get used to at night, cause with the green condoms on, you can't really see the numbers all that well w/o squinting if you have your lights dimmed at all, but you soon realize that with a quick glance you'll know if it's within normal operating temps or not. My FP gauge will be put in the cubby hole (since I don't have leather seats), as is a dummy light that I have there for transfering fuel. I might build an angled bezel for it, but since it's FP and not important to look at constantly, I probably won't.
Tools, hmmm. Well, for the boost gauge, you can go two ways... . either get all the reducers and put it in place of the plug just in front of the map sensor, or you can drill and tap your intake horn, which, with hindsite being 20/20, is what I would do now... it wouldn't take much longer, and I think it'd give more acurate readings. If you go like I did and replace the plug, standard wrenches are all you need, along with tape for the threads (am at a loss right now as to what that tape is called, I'm feeling pretty slow). For the pyro, you need a drill bit and tap that is appropriate for the size of thermocouple that you have. I actually put a 1/4"x1/8" (I believe) adapter on mine, and used a 7/32" drill bit and 1/4" NPT tap for mine... now, don't take those measurements for the gospel, cause they're just off the top of my head... double check everything. If you drill pre-turbo, drill a pilot hole first with 1/8" or slightly larger bit, to make sure it's good and straight, then go back with the bigger one... . the best trick I found was to slap some grease on the bit, then drill about 10 turns (or until you have some shavings sticking to the grease) then wipe it clean and do it again... . yeah, it took me 2 hours to install my pyrometer, BUT, I never removed my turbo, and never sucked any metal through it... . I used a magnet after I was done drilling and also after tapping to make sure I had all the metal out of the exhaust manifold. You can find some really good writeups on how and where to tap the manifold through the search function... you also want to put it on (if going pre-turbo) the rear three cylinders, as they run the hottest. Ok, trans temp... . you either need a JRE manifold to put in the line out of the transmission, or a replacement line... . I've had both. The JRE manifold works great, but when I had my transmission re-done by Fred at Desert Diesel, he requested that I put in the whole line just so i didn't blow the manifold apart and pump my transmission dry... I figured I was spending $2K+, what another $80. So, now I have the line... it looks good, and my readings come from about 6 inches away from the transmission, in the hottest line coming out of it. For fuel pressure gauges, I'm not sure yet... I haven't done mine yet. I'm putting my new banjo for it post filter though, so that it will also show me if I have a plugged up filter... . since I just got my LP replaced a couple days ago, I'm not worried about FP too much right now.
Anyway, that's just my $0. 0175... hope I helped some.
Josh