-- HG-20 High Gain Antenna (Andrew Cassidy): A longer range version of the HG-5 that can handle either direct communications or short range relays, using 4 different dishes.
-- SC-9001R Radial Science Jr (Andrew Cassidy): A radial version of the materials bay
-- Mystery Goo™ Inline Containment Unit (Andrew Cassidy): An inline version of the goo cannister
-- KR-1 'Boar' Liquid Fuel Engine (Nertea): A single version of the Twin Boar engine