I am not saying the chain is not a good idea, but I have never used one, and my current 340 is at about 375 HP. That being said, I do not know what you are looking for. You title just says that you need advice on motor mounts, and then you post a rather out of focus picture. I have a LOT of Mopar experience, but I don't know what you want. I see you are a fairly new member. Let me give you some advice, and please don't feel bad about it. We can't help you if we do not know what you need help with. Just saying, "I need advice on motor mounts" does not really tell us anything. Do you need advice on the best kind to buy? Do you need advice on how to install them? Do you need advice on how to tell the left side from the right side? We are happy to help, but you need to provide us with a little more information.
BTW, my daughter's father-in-Law lives in Panama City Beach. I've been there many times. I think it's the nicest area in the panhandle.