I don't know of any Tunnel Port stuff other than Ford or Dove.
I have High Riser programs that will work in the castings you mentioned. Max effort would require some welding or epoxy for my ports. Intake manifolds also become a project if you go "max", because about 1/3 of a typical cylinder head is in the manifold......relocating the pushrods is a big deal. I have a new MR Race port that is really good, and BBM has a small batch of new Tunnel Wedge intakes that have no intake pushrod tube. This drastically lowers the cost of working the manifold to match my MR Race Pro Ports. In terms of cost vs. results, the MR Race Pro Ports don't flow much less than the HR Race Pro Ports, and the manifold is much less expensive than a tunnel ram.