Exhaust, prop, diff, 6 pot clocks, bigger brakes upfront etc just as they were not mentioned. Other than that service items but it's how long is a piece of string time with that. If there's no huge rush I'd refresh as much as you can on the new lump while it's out on the ground/stand when access is easier. Waterpump, thermostat etc ect oh and engine mounts. Are you dropping the m44 out or pulling up or taking the front off and pulling it forwards?