A 643 and 220 will both work a 6600 pretty good, how heavy do your crops yieldIJ - a 218 and 443 might be more doable. As for the MudHog - the 404 non turbo puts out around 120 hp - factory PRWD will pull the motor, so i'd say a MudHog would be the same or worse - as for hydro. capacity - it would be okay. 95man