kamikazekyle05 & RocketChevy56
The way it works is they are push in and then as you tie them against the other end it creates a leakproof seal.
I used both styles the push on and the screw in type...I used them on my tranny lines on the tranny side as well as on the cooler side and you can also see it from the fuel pump to the filter to the carb. Also I used braided line with fitting from the tank to the pump. I am posting a couple of picts so you can get an idea.
here is a link to the ones I used
http://www.bicknellracingproducts.co...f5587535ed5df3