I am posting this for those people who find themselves wasting a lot of time trying to find a good fitting lower radiator hose for their LS swap. I read every post and bought a few of the recommended part numbers to no avail. I realized that not every LS swap is the same. Key differences are the thermostat housing (early or later years) and radiator selection (26" or 31" wide). My car has an Edelbrock pump and 31" Griffin LS swap radiator (1.5" id hose). I spent about an hour or so looking through the online Dayco catalog and found #71391. The picture looked promising so I bought it today and it fits like a glove after trimming about an inch off each end. Hopefully this helps someone with their swap.