I'm trying to locate a rebuilt steering box for my 4x4 Panel.Can anyone point me in the right direction?I called LMC and they no longer sell the box and Rock Auto lists the part as early 63 ps which is not what I have.I had heard that there was a ps conversion which can be done using parts from a newer Chev. I'd keep the manual gear if I can find one.I'm only considering ps conversion due to lack of availability of the original part. Any suggestions would be appreciated.