instruments

Hi all...probably not the first to ask about this but couldn't find an answer in the forum. I have a Beneteau First325 and am replacing depth, speed, and wind instruments. Pulled old thru-hull transducers and found that the new transducers are 1/8" smaller in diameter. Was considering building...

I'm replacing several broken instruments mounted on my Catalina 22 and needed some help on how to make it look nice. How do I make it go from? To this (without sinking the boat, collecting the insurance, and buying a new yacht with everything pre-installed). I'm going to use Simrad...