i'm w/ we B
my 51 bottom fits in, back slides in b-low the top cushion and has two (or3) short curved hooks that after you push back a little thaey hook around the front bottom frame tube.
HINT::: HINT:::

in an AD cab
if you want MORE storage room in the cab, cut away the front floor skirting. i left about a 12'' wide riser in the middle. which means i cut/sawed (skilsaw) two pieces right under the two riders legs, that's about 18'' wide, down to the floor.
this allows you to gain access under the seat w/out lifting the bottom seat up.
IT'S very convienent
