If its 230 your after mate then what you list above is not worth the money.

A good set of shotpeened rods and a low milage crank will see you with 230 for the rest of your days.

Pistons i would say are worth the money though IMO.

New oil and water pumps, new oil pick up pipe and its worth replacing the sump.

Get rid of the dodgy old oil cooler as well.

A decent cam, bigger intercooler, and a good set up will see 230.