First off, I believe that any more that 5 1/2" on a 16' hull will not work, especially with a Chrysler with a less than optimum prop. There are a few companies that make LWP nosecones that are universal. I have a Land & Sea Universal Nosecone kit that has never been installed I would sell for $50.00 plus shipping. A transom mounted pickup would work, but I don't believe that the gain would be worth the work or the investment on that old motor. For a jackplate, take a look at the Bob's Machine MJ5. It's a 4 - in 1 plate, either 2.5" or 5.5" setback, and will go 0* trim or 6* negative. I sell them for $189.00 + shipping.