Well, since we're on topic. I'm upgrading my diff, trans, and engine mounts this year. The stock rubber is starting to get lethargic and things are getting sloppy. I make 500 crank now and will probably be close to 600 on corn this year. I don't really worry about the halfshafts themselves especially on an automatic car leaving off the footbrake like I am. BUT I have a feeling tired bushings could cause things to break that really wouldn't otherwise. I'm already worried about my stock connecting rods. LOL