Our die cast High Volume fuel pumps are very similar to the types originally used on Hemi's and Factory performance cars such as Max Wedges, etc. For those who don't want to deal with the hassle and noise of running an electric pump along with a regulator, etc these are the way to go. The extra large diaphram puts out 80 GPH (free flow) at 8 PSI. The die cast aluminum housings are chrome plated and feature 1/4" NPT inlet and outlet ports. A very nice pump at a great price.