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whats your intended purpose ? for show ? race ? regular weekend car ?
personally I think they look clunky.
and they add 2 extra connection clamp points for possible leaks
2 hose clamps on each end. and the corrigation design does not help your water flow.
I use one for an upper and lower in my '71 and love it. I've had it for about 6 years. You can bend it into any shape you need. I have the black ones. I plan to use them on my other cars as well.
Never used them on a Corvette but I have them on my '40 Chevy street rod for over 15 years. No leaks ever. I used them because I needed a very tight bend on the lower radiator hose. There is nothing "stock" looking about them (clunky? maybe ) so that may be a downside depending on the theme of your car. I have not found them to hamper coolant flow though. The "look" is a matter of opinion. The performance is not. They do what they are suppose to.