If it's like the Faster single point coupler they copied, you can use a standard female ISO 16028 'flat face' coupler to connect to the male tip sticking up. Likely 1/4" or 3/8" size.
Top on on this page:
https://www.boltonhooks.com/wp-content/uploads/2020/02/qd_sizechart.pdf
Welcome to OTT, that is a very popular and mostly trouble free machine, congrats!
Here is a search for L3901 if you want to do some reading:
https://www.orangetractortalks.com/forums/search/3733576/?q=l3901&o=date
Only JD had those!
The 'norm' is to buy a CAT1 to CAT2 bushing, and a CAT2 to CAT3 bushing place the smaller one inside the larger one to get to the required CAT3 sizes needed for a Quick Hitch (not CAT2 as stated).
I just have a 2-axis on my Clausing, never felt the need for a 3rd, but I'm not what you'd call a 'power user', just bobby type stuff and some prototyping occasionally.
The not-so-simple answer is that the ASAE ASAE Category 1 Standard S278.6 for quick-attach hitches calls for CAT3 sized hooks on the upper and lower hooks.
I saw these at the recent Equip Expo I went too:
https://www.scepter.com/products/consumer-products/
This is the best version of this style I've seen. Nothing like the crappy metal chinesium ones sold everywhere,
I personally use the Flo-Fast system with the hand pump, so no batteries or...
That IS a lot of gap there! Wow.
Imagine that with the added weight holding brackets he sells that puts down pressure on the hitch itself vs the implement directly.
Not sure I agree with the "no top link bushings needed" theory either.
We quite often refund shipping for smaller orders without the customer asking, we do cover that in the FAQ's. We just do it so as not to profit from shipping especially when the USP backend quotes crazy amounts.
In this case we could use a small flat rate box and refund $5.50, or use Ground...
KBOH / BoltOnHooks LLC has added a few new Hydraulic Flow Restrictors to our lineup. Many are custom made in house and not available from other sources.
Flow Restrictors are perfect for hydraulic top and side links as well as any other hydraulic cylinder to help slow them down and gain more...
Bad Boy rebadges TYM machines, made in South Korea.
At the time this video was made, they were made by Branson, but they have since been acquired by TYM/Kukje.
More history on the merger/buyup:
Just catching up here, I have also responded on TBN.
Looks like you need our 1-5/8" spacered hooks, the ones in the "pin-on" section of the website I linked earlier. There are also measuring instructions on that page.
https://www.boltonhooks.com/kubota-pin-on/
Can you share a link to the online diagrams you where looking at?
I would think you just need to power the controller with +12 volts and ground to make it work.