The 310 is an om 602 five cylinder motor that’s a far swap if he’s going that far he’d be as well fittting one with a turbo to get him up hills. Or better still fit the om 605 ive considered this indeed I have an engine waiting they get mad power from these but I’m going to stick around 200 hp and that will give good reliability and fuel consumption,
Message me and I’ll get some details for you
Moose