flexable radiator hoses?

I wanted to try a flexible rad hose, and this looked the kind to use... any body ever try it? This or molded... help me out

:@:

http://store.summitracing.com/partd...0124&N=700+4294853595+400304+115&autoview=sku

Im using a aluminum rad with a 74 duster 440

street use