If using a Walbro GST400, GST450, GST500, GST520, GST550 fuel pump as a pickup / feeder fuel pump in the Nuke Performance CFC Unit and mounts the CFC Unit into a low height fuel cell, this kit lets you mount the Walbro fuel pump into the pickup pipe without interfering with the various diameter of the Walbro GST fuel pumps.
Included in the package are a bracket and a larger diameter hose clamp.
Can also be used as a distance bracket for other 39mm fuel pumps if you have interference with your fuel level sender being too close to the casing of the fuel pump.