So I've come up with a few more newbie Sundowner questions:
1) What speed should it be planing out at? It seems like the boat plows quite a bit from 8-18mph. I've got the outdrive trimmed all the way down. What should I expect for a top speed with the 5.0l engine an a 19 pitch prop? Getting the boat to plane with the V8 isn't the issue, but on rough days like last weekend, I was constantly adjusting to maintain a slower planing speed. Who knows, it could just be the nature of the beast...
2) I tried to get behind my gauge cluster. I used the search function, but there are just so many threads/posts that I didn't see an answer for my particular set up. I have what looks like a gray plastic trim piece that has a single screw at "12 o'clock". I remove that screw, but nothing budges. I don't see that there's a way to get behind the cluster as it appears to be behind fiberglass under the dash. I want to start working on cluster replacement, but I feel like I'm stuck at step one... Remove bad cluster, LOL.
This is the one I have:

3) Has anyone mounted stereo speakers in the front seat area of the boat? I want to put a switch in for the speakers in the cuddy, since the baby spends a lot of time in there sleeping, but that makes the two rear speakers not loud enough. I would love to see 6.5" enclosures or other ideas for mounting in this location.
-Nick