Radiator Hose Problem

[Jtrux]

Okay, i'm finally getting around to doing some work on my truck and i've come across something I never thought would be an issue. I converted the new engine to a long style water pump and when I went to put the old (bought it right before I tore the old engine out) radiator hose in place I noticed it did not fit right. Should I get one of those flexible plastic hoses or does someone know a part number that will be a perfect fit. Also does anyone know where to get the flexible hoses? The only places i've looked are summit and O'Reily's.