I am thinking of using stainless steel flexable hoses on my 68 charger.
Are they reliable????

I used 1 to move the inlet from passenger to drivers side.
basically a real long one the crosses over the bottom of the car.

had it for about 3 or 4 years now.

they come with rubber ends that the metal fits into and you can put a hose clamp on with a metal cover.
various sizes to fit most size wp or radiator ends.

no issues so far.

I have used a braided stainless hose for my upper radiator hose for at least 20 years. It will last you a very long time and looks great.

My Challenger T/A STILL has the Stainless Steel radiator, fuel, heater hoses, power steering, emission hoses that I put on it back in 1980...never one failure/leak, other than my wallet at the time,...so I'd say they are reliable...30+ years later and still going