I have a 440 duster that I am using the stainless steel flex pipe with the polished ends and I am having big trouble sliding the bottom one on to the radiator 1-3/4 one I can get it high enough to put the clamp it just pops off. so I am thinking of going back to the regular stainless braided hose just want to get the correct part number. I am looking for lower but the upper as well so if anyone know the part numbers for dayco or goodyear that would help.
the shape of the hoses I am looking for look like this. i attached a picture of the hoses i am looking for

thanks

I just got done looking up hoses by application (B or C body 440 cars with or without AC) on Rock Auto (for Dayco numbers) then went to the Dayco site to check and cross reference dimensions. Go to www.accessdayco.com . "Part Interchange" and "Part Lookup" were invaluable. However, the images on the Dayco site are often distorted. Then I bought an assortment of hoses locally to test for the best fit.

Anyway, that upper looks like 70539. 70492 or 70592 might work for the lower.

thanks very much that helps
awesome car by the way and great website. I may have a couple of questions down the road for you if you done mind