A mounting assembly (3) for connection of a drive mechanism to an engine (2). The engine (2) includes pistons, an engine block (5) and an output shaft (80). The assembly (3) includes a drive mechanism, connecting rods (4) and a pedestal (11), whereby the assembly (3) is mounted to the engine block (5) and the rods (4) are inserted into the cylinders. The pistons are then secured to the connecting rods (4). The pedestal (11) includes means to locate the assembly (3) on the engine block (5). The drive mechanism is preferably a wobble yoke with two beams (9), two lower yokes (60, 61) and a universal cross component. The pedestal (11) is secured to the block (5) through openings in the yoke.