the drivers side, with the 2 ribs on the back, is the standard issue panel seat, used for both sides - the hingeing mechanism on the other looks similar to the burb pass seats I've seen, tho the backs on them fold forward - the metal back on it that wraps around the sides, looks like a sedan delivery seat - don't know if the pass side on them hinged

Bill

Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics