This might be a really crazy idea, but about 25 years ago, I rebuilt a 4 cylinder engine from a british car. I had the crank journals done, and when I got the crank back, the pilot bushing was gone. (I was about 17 years old at the time and had no idea what I was doing.....) Anyway, to make a long story short, I ended up getting a machine shop to turn a bushing from a piece of oil impregnated brass. Believe it or not, I put everything back together and it worked for years. My guess is that this isn't done anymore but......