The engines are exact same, except for the boosters, which were replaced with P-375 engines, and now give over 14 MN of thrust. The P-100 engine is upgraded to a P-150 engine and gives 796 kN of force, allowing for more load to the Moon. It can carry 66,000 kg to LEO at 300 km and 17,650 kg to the Moon. This is the rocket in its Rocklab space station refit. The fairing is way bigger, it's now 6 m wide.