The landing leg is all wrong, but it appears that the swivel is there. I have contacted a seller that I think has the parts you need, and asked for pics. I am really woried about what the shipping is likely to cost, which will be over and above the cost of buying the lunette, casting and leg that you're after....
Could I trouble you to e-mail pics to me? My e-mail link is under my user profile.
Pvt. Kirk Gustafson
23rd Regt. 2nd Infantry Div. WWII HRS
1942 Chevy G506 1-1/2 ton 4x4 Cargo w/ winch
194? Ben Hur water trailer