[Michael R.]

John, you wrote:
Is this piece of wood supposed to be there? I think the chain is the only part of the brake steering i have, the other chain and the rest of the linkage to the steering column is missing. Also is the small piece of tube fastened to the rail original?

Toss the wood in the skip. You will eventually need a rear seat bearing plate CTL 13116 in there to support a seat frame above the fuel tank mounting brackets. There is a corresponding similar length bearing plate TL 13115 mounted to the engine cover frame to support the opposite side of the seat frame assembly. You can toss the chain, it is not a brake part. The angle iron attached to the chain can go out too. As Richie mentioned, there are two steering clevis parts, one on either end of the chain. One appears to be CTL 4051, the other CTL 1737. Toss the pipe on the engine rail, as well as the clamp holding it in place.

Does your lower hull number 5701 have a upper case letter 'C' with a line through it?

Your MK-I*carrier was built about the end of April, or very early May, 1942 at the Ford plant, Windsor, Ontario, Canada.