I’d recommend trading a warthog for something else if costs are a concern.
This is a good point and a warning worth taking seriously.
Many of us have been lucky to not have an issue importing a warthog. Especially when taking some extra precautions. However, there are horror stories. In theory, if you have the skull finished over there, you shouldn't have an issue. But, it's not a guarantee. It just takes one overzealous agent in inspection to cause issues.