Original: The Class 112 DMUs utilised the standard Cravens body used on Class 105s but had a single Rolls-Royce engine rated at  per car, all of which formed into 'power twins'- two car sets with both vehicles powered.
Simplified: The Class 112 DMUs used the standard Cravens body used for Class 105s but had a single Rolls-Royce engine of 238 hp per car, and they were all formed into 'power twins'- two car sets with both vehicles powered.