I found this parts on the internet, the SNES version came from http://www.raphnet.net/ in .STEP format, and the NES was given to me by /u/ubermeisters on reddit.

I had to modify both of them so that they would print with a 0.4mm extruder (which is the extruder I have) unfortunately the holes are not closed, but once you put the pins (I used steel wire) the connector woks as intended.

I Hope they work for you. and if you improve on them, please let me know :D