Get 12,000 Zenie go to "Recommended" in Mr. Popo's shop. When you see Frieza's Space Ship. pay the 12,000 Zenie. This Capsule takes three spaces in Frieza's slot. When you die, Frieza's Space Ship appears and restores everything. It also transforms you into Cyber Frieza.
Play through the Namekian Saga under the hardest difficulty setting and defeat Frieza at all times without losing once. The Capsule at the end should be Frieza's Space Ship.