Kirby Vacuum Cleaner Hose Attachment

I bought an ancient Kirby vacuum cleaner for cheap (you know, the ones that can survive a direct nuclear strike and keep working). Problem is it came with no hoses.
.
My idea was to print an adapter that would allow me to use a surplus hose from a dead vacuum instead.
.
I haven't yet tried to print this thing, so some adjustment may still be necessary.