the lower lift arms, were they connect to tractor. there might be another hole in the lower lift arms to attach to tractor.
the turn buckles (2 long eye bolt screws, with a long nut), and then another that is fixed length connecting to lower lift arms, some times were these connect to lower lift arms you have another hole you can connect to within the lower lift arms.
the top link were it connects to tractor, sometimes the tractor has an extra hole or two you can connect top link to.
some times the implement itself has 2 holes were top link connects to it.
some times the implement has 2 or more bolts per say that the lower lift arms attach to it.
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pats easy hitch, might be more useful.
upside down u shape quick hitches, you may need to modify implements to work with them (as in cut and re weld)
telescopic and lower lift arms you might be able to buy some place that might be a bit longer.
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make sure you have your "check chains" the fit between lower lift arms and generally attach around the PTO shaft on rear of tractor
make sure you have your "sway bar/chains" they fit on the outside of lower lift arms and back to tractor.
both of above help stiffen up and protect the 3pt hitch within reason from side way forces.
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3pt hitches have all sort of bars/linkages and can get confusing at times, you might try posting a couple pictures with implement hooked up showing implement and then showing the connection points of the 3pt hitch at tractor and at the implement.