250mack

I checked the axle found it to be fa505 I had no idea there would be a difference in parts the chassis I bought had no steering box on it I used the one off the junk truck not knowing there would be a problem

The steering box is the same but the rest looks different ill half to head down to the shop and check the axle number and get back to you 

When I bought my chassis it had a pitman arm on it when i installed the cab and went to install the pitman arm it would not go on the factory box I think pitman I have is for a powersteering conversion I measured the nut and its 1 5/8 the one I have is for a 1 3/8 

Looking for some help since I've been redoing my b61 from the ground up bought a chassis last year and now I finally got the cab put on I installed the steering box and ran into an issue the pitman arm will not work with the b61 steering box and I can't find one anywhere I called a couple salvage yards and no one ever got back to me thanks for any help