Need help on pitman arm

[jd21476]

So I bought a quick steer gear box from LMC truck. The old gear box had a nut on the side of the pitman arm where it linked to the steering gear box. This new one take a bolt on the bottom. The pitman arm has a hole at the end where it link to the drag link. I am looking for a pitman arm that has about a 3" drop, a solid end on the gear box side and a hole in the other end to fit the drag link. Where can I find one?