My father converted his 35 5 window in the 80s to a rumble seat. Didn't have to drill out the hole for the handle, just flipped the lid 180. of course you have to cut the rain gutter, bend new rain gutters and install them to allow the lid to fold down and water to go down to the bottom of the tailpan. You will have to find a coupe or roadster to measure the new rain gutters. Dad was lucky that the guy who fabricated and installed the gutters had a 36 roadster to copy.