Hi Bon,
What's wrong with using that 60102 in the second photo as it will fit straight on and with the manual choke you will be able to utilise the original throttle cable. Only the absolute purists will know there's been an engine swap.
If you can get the original Kirby going again in a serviceable state then please do by all means as there's nothing wrong with them when they are running reliably, it's just when they don't it becomes an issue..
Cheers,
BB.