You don't need kovarex, you need turbo belt
This mod add turbo belt as standalone, they need utility science pack and uranium 238 to be build (After testing it's very fun to really have to scale up uranium 238 production, it's feel really balanced to have replace tungsten with uranium 238 and I'm this close to say space age should have green belt be craft with uranium and not tungsten, they are green no ? :p ).
This mod require the DLC since its take graphics from DLC (with explosion, frozen and even particles), we use saplib to not include graphic directly reducing size of this mod.
Pairing mods:
Loader, Either: