All About Jetex, Paul Del Gatto, 1963 (p.48)
Paul Del Gatto had a fondness for high-speed, high-altitude craft with a spacecraft or missile-like configuration. The power of the Scorpion 600 allowed him to fly faster and higher than ever before.
In this model, he offered the option of a cut-down augmenter tube to boost the power even further. To aid retrieval, he added a fuse-operated parachute recovery mechanism.