RobbMc Performance Products has added a line of fittings to our website.
Most of these fittings are made from plated or stainless steel rather than aluminum. We did this for two reasons; steel fittings are less expensive and steel NPT tapered fittings won't gall when installed in aluminum parts.
We added these fittings to our line primarily for use with RobbMc products but they can be used in any application requiring 3/8 NPT or 1/2 NPT or -8AN O-ring port fittings.
-8AN O-ring port fittings are used in our 1100HP pumps but also in applications such as Mallory 250 pumps and large Mallory regulators.
http://www.robbmcperformance.com/products/fittings.html