Re: 1950 lone*star malibu rebuild
Welcome to dry dock
I think the term some were looking for earlier about the motor not needing outside power once started, is a Magneto ignition. Sorting out the end of the throttle cable can be tricky. I am not aware of a direct source for those parts, at the control box w/ the throttle lever either.
You might try the salvage boat yards posted in
TashasDaddy's Top Secret files thread, my understanding is that those cable ends are hard to come by & may change year to year, even on the same model motor occasionally. There is also a troubleshooting Magneto ignitions on that list. Is that motor you got from the neighbor an electric shift lower unit? My '69 40hp Johnson has the electric shift too. Those electrical parts in the lower unit are also scarce, you may ask around for them too while you're looking for cable ends.
Look through the
Johnson OB threads, there may be helpful info there as well, or start a Where can I get these end connectors thread there.
Since you don't have a shot of where you are w/ moving the seat backwards, I don't know where you are with all that, but you might want to add back a splashwell at the transom. Even if it doesn't come forward very far. The Starcraft owner's group tin guys are often trimming their splashwells down, as they are quite often HUGE. Depending on how you run the boat, from 0-WOT-0 very quickly, will tend to make water wash over the transom. Or where the occasional larger wave might be created (barge, or other large boat, ocean/great lakes). In a tinny, that has a drain plug &/or bilge pump, it's not too bad, might just get you, your shoes & stuff wet

Unless its a significant wave of water, in which case it might just help to prevent swamping the boat.
Nice L-S
The
bench seat thread, by WoodOnGlass
Some helpful info is contained in the
Starcraft owners forum
And read thru some of the threads posted in the
SC resto list
You may find some ideas for changing the arrangement of the seats & adding/changing the splashwell. Both of those have been done a few times in the SC threads.
Best of luck w/ your project