Hi, Since my Cobra uses a motor with a Dry Sump oiling system I've had to make probably 20 AN connections during the installation. They were all #12 and #10 fittings.
Here are a couple of observations:
First: Buy the "swivel" type AN fitting which cost around 3 or 4 dollars MORE but make the whole thing MUCH easier.
Second: Make sure you get the correct hose for whatever you are planning to use the lines for. ie make sure that the inside of the hose is OK with, say, an
oil line to the cooler.
Third: When you cut the stainless hose make sure you tightly tape the area to be cut so that when you do cut it there is tape left on both pieces of the cut hose. If you don't the end will unravel and you'll have to recut the hose and lose part of it.
Fourth: There are several ways to cut the hose but I've found that a "throatless" shear works the best as it makes a perfectly clean cut. I've also used a hacksaw, miter saw, saber saw, etc with less success at a clean cut.
Fifth: Put the fitting into a vise with lots of cushioning material to not scratch the soft aluminum fitting. This is something you need to figure out for yourself. After you lock it up
oil everything as you assemble the fittings. Make SURE you get an instruction sheet when you buy your fittings and hose. Also you could go to Earl's website to down load the info.
At the end it will tell you to "pressure test" the fittings you assemble. I know of no easy way to do that but I can tell you that if you pull it as hard as you can you will not move the properly installed hose. My motor has 100 lbs
oil pressure at high RPM and never had one drop of leakage. These fittings are a pain to build but VERY good.
Hope that helps,