A bit more work, but faced with a similar question, I went with path of the GM alternator run directly to battery (to bypass amp gauge). I use a voltmeter to monitor the battery state of charge and alternator state of health. This does require...
I've had both a SBC and a 2F. SBC was always a challenge with heat. Sometimes it was vapor lock, sometimes coolant temp, sometimes the floor just got really hot over top of the exhausts. It had a modern Edelbrock carb on it and ran well in...
See The Different Colors of Coolant and their significance - https://fuelandfriction.com/weekend-warrior/the-different-colors-of-coolant/
Pre-1990, I'd use the classic green ethylene glycol / inorganic acid coolant.
For my '75 w/2F and 4 speed, I used a HF cherry picker to remove the motor, transmission, and transfer case together as a unit. To re-install it, I found it easier to install the engine first. Then place the transmission and transfer case...