The War Eagle isn't a Mod-V, it has an 8 degree hull. A Mod-V has a V at the bow then goes to a complete flat bottom. The War Eagle is going to be a better ride easier to control than the Alweld flat bottom boat.
If you like the layout of the War Eagle better, then keep it and have the transom built up for a long shaft. It shouldn't be anymore than about $250-$300 tops to have the full width of the transom to 21" specs and not just a lift plate, which I would not have done.