Im thinking of getting this fuel pressure guage http://www.dynotunenitrous.com...ct=19 or something similar that can be mounted inside the car because im getting nitrous. Does anyone know where or how the sending unit hooks up to the fuel system?

 

probably like other fuel pressure guages

 

put the sending unit anywhere before the regulator/return line.

Look up "hose pipe fittings" (or something like that) in your yellow pages if you have trouble finding fittings to adapt your fuel system to your sending unit. It will make your life easier..

 

fuel system is stock, I know i can get a golden eagle fuel rail and the sending unit will screw right in but if i can do it cheaper i will.

 

I just pulled the endcap off of my d16a6 and drilled and tapped a hole for a PSI gauge to sit in, never leaked. total cost was around $10 (gauge (surplus store), drill bit and tap)

 

http://cgi.ebay.com/ebaymotors...QrdZ1

see the two brass fittings that come with this guage, anybody know where i can get these or what they are called so i can search for them.

 

The elbow is 1/8 27 NPT and can be found at most auto supplies..

The fuel filter service bolt is 12mm x 1.25mm

The one shown there is a specialty item I would think..
You may be able to get one from B&M..