GM Bench Seat Riser

The seatback position in the 1960s-70s General Motors bench seat was reclined a bit too much for my liking (I have a '71 Olds Cutlass).  Of the two prints required, the larger rectangular riser goes underneath the seatback latch which is mounted to the seat bottom with two bolts, and the round one is placed under the seat back stop button towards the middle of the seat with a single screw.   After installed they are virtually invisible.   If you want to move the seat forward even more, simple increase the height of the risers by a couple mm or so.  I printed mine at 80% infill as they do need to be sturdy.   Also, you may need a longer screw to attach the round riser to the seat base.   I needed to do so.