A production injection mold (IM) for a AP case, would be well above $5K due to the mechanics involved. You would need retractable slide pins for the lug holes. Depending on how you split the core and cavity, they might need to be actuated by hydraulics, adding more costs. Not just that, but due to the sharp lines, multiple EDM burns would be required. You could get around the sink with material like Dylark, but you would never get the CF look like AP. Even with the additional of CF fill