Just wondering which engine you guys suggest i put in my Seagull PC-9 an OS .46AX or .55AX.

I originally planned on the .46 but i have made a few small mods to the plane that have added weight, C-Cell battery, larger fuel tank etc. Will a .55 be to much for this plane or will a .46 not be enough? I take off on a rough grass strip and generaly have to drop atleast a prop pitch if not 1/2" of size to most people with the same plane for the extra torque.

I don't like overpowered models but i don't want the plane to be lacking either? What do you think? Will the .46 be plenty of engine or up it just in case?

Thanks in advance

Stix