I agree with JohnRR, once you've taken the sprag out it will never be the same, get the good bolt in.

As for the bushings most times it's not necessary. You need to check them for wear, look at where the sealing rings ride, especially in the front drum to reaction shaft and input to reaction shaft. If there are any wear grooves on those surfaces the bushings that support them are toast and the hard parts will need to be replaced anyway.