The Radium saddle tank fuel cell conversion kit lets you link a second Radium fuel cell to an existing cell equipped with an FCST-X surge tank (sold separately). Installed in the secondary cell, the kit balances and distributes fuel between the two cells to create a true dual-fuel-cell arrangement. Cells may be different volumes; the kit handles unequal gallon sizes.
Radium Engineering Saddle Tank Fuel Cell Conversion Kit