Will the fusion reactor be added separately? Is this possible?

Fusion reactor is a complex thing. In Space Age, it requires special resources and other buildings (Cryoplant) to operate. I wasn't planning on adding anything that needed new resources/intermediate recipes.

Fusion reactor is a complex thing. In Space Age, it requires special resources and other buildings (Cryoplant) to operate. I wasn't planning on adding anything that needed new resources/intermediate recipes.

is it possible to add a turbo belty and stack insertery without space age

There are already created mods for these two things by other authors)

There are already created mods for these two things by other authors)

Well, then, what about the Tesla and the rocket launcher?