Hi I was recently redoing front wheel cylinders and I noticed that my passenger spindle would move up and down. I haven't really checked into it much.but I don't know weathers its the kingpin or the whole spindle. But I know its still holding on at about 45mph.Is there any type of newer truck that will cross with front end of my 57 6100. Does someone also know were I can get a tie rod for my truck? Thank you for your help.