My car is a '36 Chevy Standard Coupe. The '36 Standard Coupe did not come with a rumble seat, only the 'Sports Coupe' did. However, upon close inspection I found they used the exact same lid, just rotated one way for a 'trunk' and the other for a 'rumble seat'. Purchased RS hinges, remade the drip rails, altered the latch to a bear claw, cobbled in the back seat of an Astro Van and WaaLaa, a rumble seat.
Picked it up in August '99. Been sitt'n in a garage in Mill Valley CA for over two decades. Neglected and forlorn, but never modified except for a 231, oversize tranny and '53 Pontiac tail lights. Bought it from the second owner's son.