I just got done finishing up my upper intercooler pipes for my 1/2 Na-T. All I used were 4 couplers w/ tbolts, a 180 degree mandrel bend, and cold air intake for a crx. I know I don't have all the clamps on yet. I have to order some that will fit 2.75 inch piping.
Edit: Due to popular demand I will add some more info.
Parts Needed:
1988-1991 Honda Civic CRX SI Cold Air Intake Kit
2"-2.5" Silicone Transition
4: 2.5" Silicone Straights or Hump Hose
4: 2.75" T-Bolt Clamps
5: 3.00" T-Bolt Clamps
2.25" T-Bolt Clamp
2.5" OD 180 Degree Mandrel Bent Aluminuminized Steel Tubing
Tools Needed:
Pipe Cutter
Various Hand Tools
I made the mistake of ordering the wrong size T-Bolts for most of the setup. If you order from ATPTurbo you need the sizes I listed above, if you order from HighTempSilicone the sizes are different.
Here are some pics tell me what you think.