NOS Radiator Hoses: M Code

In the 1969 parts catalogue (dated April 1970), the upper radiator hose for a 383/440 (M-code) is #2863209 while the lower radiator hose for the same is #2863243.
Years ago I purchased a 2863209 from Rodger Gibson for about $40 US. I was not able to find a 2863243 at the time but a Goodyear #60659 fit my M-code Barracuda perfectly.