Official 3rd Gen Hemi thread
I have a truck 5.7 in my 73 Duster with a stock style radiator from Autozone (B499).
I went through the Gates catalog I found online and ordered a number of hoses with the right size inlet and outlet that were close to the right length and had some bends that looked like they might fit. I ended up using Gates 21581 upper and 21256 lower. Both were trimmed some to fit.