All of these replicas use Tweakscale and Kerbal Joint Reinforcement
Mercury-Redstone, Mercury-Atlas, Gemini-Titan, Gemini- Agena Target Vehicle, Saturn 1B with CSM and Adapter for ASTP,
Saturn 5 with CSM and LM(only 173 Parts!), Saturn 5 with Skylab space station.
All replicas at about 55% scale and low part count.