Welcome Back!!
Sounds like you've done a bit of researching, glad to hear that. Many just go out and buy without knowing what they are buying.
I am a bit envious, however. Between my job and Covid, I've been looking at parts and not able to do anything with them. Fortunately, two days ago I was able to get down to the Hydroplane & Raceboat Museum to get a bit more information off of my boat, the 1973 Pak. IF(and that's a big "IF" with the wife wanting to work in the yard all weekend, that is if it doesn't rain)I get to work on the boats, I'll be working on setting up the sponson framing and doing some final shaping on the engine bay sidewalls as the bottom of those was only roughly cut. I was able to get the information I needed on the runners and fairings while I was at the HARM so now I can start working on them again. Needless to say, I'm looking forward to playing with epoxy and actually making some progress