On old rides some things need to happen so you do not get stranded.
Here is a budget 442hp 350"
Now the fuel lines in all my old rides gets replaced with good steel 3/8" new line. all brake lines and hoses get replaced.
Fuel tank gets removes and inspected and new pickup and new float assembly.
If your float assembly works you are good there.
New grounds and new hot wires from battery and from block to frame etc.
Stranded because of a busted fuel line is a bad deal and you could have torched the car in the process.
Avoid as much rubber line as possible.
Radiators in my cars are new.. i will not use a 10 year old radiator unless the car was in service all those years.
If it has sat empty for a few years ..It could be iffy..
Radiators are cheap compared to being stranded.
I can jump in my 57 or any of my old cars and turn the key and head to California no issues.
Not that I want to go to California
I run carburetors and those are very reliable.
I also run factory GM distributors not those aftermarket MSD things.. Never an issue.
For a few years the wife and I both drove over 70,000 miles a year.
I drove my 78 Nova mostly.. with the engine that is now in my 57 chevy.
Oil changes every 2 weeks.. I needed reliability.. I did break 3 torque converters and had 1 tire blow out in all the miles I put on the Nova.
I suppose when literature on the converter states Not intended for big blocks or max HP 350 they kind of mean it.
I did find out something in the lower rated converters is pressed in and the higher stall ones for big blocks that part gets welded.
I forget what it is ..But a local converter company fixed me up and told me about it.
I spun one of theirs.. they said they never had one spun like that in the low stall converters and their others get welded.
Now they weld all of mine.