A #7 manure spreader would be good match, or even an 11. I'm pretty sure the 7 was built first, but both were made around the same time as your tractors.

I don't think you are going to find a trip bottom plow from 1936. Your best bet is probably a 300 series plow with a break away hitch. Those were made around the same time. If you truly want trip bottoms you'll have to get something from the 1950s, like a 4240 or 4340.