It's good to figure out what caused the squeak but the bottom line is that you want the noise gone. Spray all the bushings with silicone or WD-40. Penetrating oil works as well. So does transmission fluid although it's a lot messier than than aerosol lubricants. Bounce the front end and re-apply...
Both options were 155 horse 4 barrel 318's. Both were also H engine code. The E47 was listed as HD and not available with California emissions. HD with steel crank for truck/van/motorhome applications? Just a guess.
For 4 barrel 360's I see 3 listed for 79. A E56, J engine code, 195 horse...
As long as it's above the carb bowl so it can gravity feed. Otherwise you will need a pump. ;)
https://www.forabodiesonly.com/mopar/threads/electric-primer-pump-for-fuel.477471/