I’ve had over 50 years experience playing with props on all types of boats, many aluminum boats, go fast bass boats , bay boat, and multiple walleye boats so I’ very familiar as to what causes what and what changes affect what.
As to that Lund, yes I changed out to the same prop in stainless, a 17″ version. I actually think that boat should use a 15″ version whether it’s aluminum or stainless. I went with the same size as I thought with raising the engine a hole I would gain a few more rpm than I did. If I had kept the boat I was going to try and find someone with a 15 that wanted to trade for my 17, and then would have lowered the engine back down a hole to where it was originally. If I remember right, even with the engine height change, there was only a small rpm change of a hundred or so. If you are looking for a larger rpm change drop pitch.
Sadly I sold that boat as I needed some garage space as it was a second boat for me, and with two boats and two vehicles and a three car garage, I wasn’t able to talk my wife into parking her car out in the winter.
Somebody got a fantastic little boat. Actually, was in some back and forth talks with a longtime member on here about him buying it, but someone local committed before him. He missed out on a great boat.