I dont think it exists. Boyds is about the extent of any “off the shelf” wood stocks for a tikka that Im aware of. The above mentioned rokstock available sometime in the future might be a new possibility. Maybe there is someone with a duplicator that would make one-off’s for you, but that’d be pricy. Everything else is basically a custom stock with custom stock pricing—any stock maker will do that for you.
Try Macon gunstocks. Looks like they have a t3 inlet they offer, unclear what patterns they can or will make. Its sold as a semi-inlet, meaning you or someone wiuld need to fit it and finish it, but might get you where you want to be. ????