Here are links to information about different model Stirling engines.
Model Stirling Engine "LSE-01"
Model Stirling Boat with MSE-01
Model Stirling Amphibian Ship with MSE-02
Variable Phase Angle Stirling Engine "MSE-03"
Variable Storoke Stirling Engine "MSE-04"
Model Stirling Boat with MSE-05
Rotary Displacer Type Stirling Engine
Free Piston Type Stirling Engine
50 W class Stirling engine, Mini-Ecoboy