What chassis mods will I need on 440 conversion

This is the place to start with lightening up the engine that isn't so super expensive.
Water pump and housing!
Cooling System-440 Source

Check FABO calssifieds for used intakes! Save a bundle, loose weight!
Heads are pricey though. Worth it when you swap and take advantage of the new and better air flow. But until the money tree grows.....