Power for z33
 

Afternoon fellas, my buddie just got his Z33 out of storage after 3 years. When he put it in the PT side motor was stuck from a bad Exh. manifold and the Stb had some Hrs on it so he's decided to repower. It's a Merc boat w TRS drives not a King Cobra POS... Question; what kind of power/props do we need to get up into the low 70's @ WOT? Thanks for your time and consideration!