The SM-4100-SS is a highly customizable, standard side mount product.  Most fitting sizes are available.  The dimension from the float hinge point to the fitting can be easily changed for your requirements.  A popular option is to add a compression fitting, allowing the side mount to be threaded into the tank coupling as tight as possible.  After the fitting is tightened, the orientation of the float can be adjusted and then tightened into place, creating a seal good to 100 PSI.