Might want to contact these folks. Tell them what you're needing. I had a similar problem with an IP for an L305. They had a new one to my door in a couple of days for $426, about 3 years ago. Prices probably have changed, but Kubota wanted over $1100 for that IP.
If you needing injectors, get them there also. They're helpful, honest, good customer service, and competitive prices on what they sell.
https://oregonfuelinjection.com/