Shippy, I would suggest you contact the owner Mike Thomas at,
http://www.oceanmarinesystems.com/pricelist.html he has the best customer support you will find.
He puts the davits together based on the weight of your dinghy, if you will add a solar panel etc.
The davits came with a well written installation manual.
On the 356 you do have to remove the liner for the propane locker to reach the bolt at the bottom of the davits. A very easy job. We found the rubber seals in the liner for the propane hose and wire were both dried up and could not possibly have provided a seal, so both were replaced. Also we changed the propane tanks to two 10 lb fiberglass tanks from the 4.5 lb steel ones.
Mike even asked what side the dinghy transom will be on and used a 6:1 tackle on that davit to handle the extra weight if keeping the outboard motor on, and just a 4:1 for the bow of dinghy. We also got the cam cleats for the tackle lines, makes it so easy to haul it up.
He also needs measurements of the inside of the dinghy to make a lifting harness to fit inside the dinghy.
Mike does a great job and knows Hunter sailboats, he goes to the factory for each new model to design a davit system for that boat, so you can be sure it will fit properly and not damage the stern rail.
The dinghy sits really high at the back of the boat. I find it makes a handy storage spot for boat hooks, fenders etc. while underway

I will post a picture of it tomorrow from the cockpit so you can see how high it sits, the bottom of the dinghy is above the stern light.
I am just a satisfied customer, no affiliation with this company, Bob
(if you have any specific questions please send me a PM)