More choice if you have a monster, bit more limited if you have a SS But just looking at OEM Tanks to fit a Monster 620 Lightest is the 916 style tank followed by the SS tank and then the two types of Monster tank. Still doesn't seem to slow Brummy Dave down as my understanding is that he's using a plastic S2R tank on his Class B Monster with the pump hole plated up Checkout the Desmo Due Paddock on Facebook |