Im releasing a 3d printable honda OBD1 housing with mounts for the SS-OBD1 adapter board
https://wtmtronics.com/product/honda-ss-obd1/
See the github page for the STL. This is released under the apache 2.0 license.
https://github.com/Glanetech/Speeduino-OBD1
Eventually this same box will be used for the K-series adapter board im making as well.