Helloo.
I have a pretty standard tow bar on my Sierra at the moment, its a Haymen Reese, I think

, and its the non-removable hitch type. Basically I would like the removable hitch type so i can put a recovery block in or things like a bike rack. I don't want to go out and buy a whole new tow bar if possible, plus I did look for some and couldn't find anything.
Has anyone fabed something up? What do you think would be the best way to go through with doing it? Could anyone recommend metal and such that id need. like square tubing/ thickness/length etc. Any tips or recommendations or just anything would be much appreciated!
If there is anyone in Canberra that's got some free time and knows a bit about metal working and is feeling helpful, well feel free to give me a hand!
Thank you
Thomas