On that TBI motor, those heads do not have a coolant restrictor, there is no coolant passage back there if I recall due to the TBI not needing fuel to be preheated for cold start/run conditions (this was handled by the temp control switch in the manifold/block telling the archaic "computer" to fatten things up). If there's a space in the new gasket for it, replace the plate. If there isn't, leave it out. Victor Reintz (SP) typically makes two different gasket kits for that TBI setup (different bolt pattern... still damn near the same) and I for the life of me cannot find out why.
Here's the VR set with the blockoffs installed in the gasket itself:
Then here's a Fel Pro without them (in the small baggie that comes with the kit...):
Personally, if the gasket kit comes with the plates already installed, you're far better off. I would however add the RTV around the port on the head (not on the gasket) then apply the gasket and manifold.