UCA Bushings don't fit?

Well ,I have been driving Valiants and Barracudas with 9 in brakes as my daily drivers since 1973 and never once had or heard of this happening.I guess if you beat the crap out of your cars it's a possibility but me,I just drive them and use them in a normal fashion .Not into all this altering into high performance ,I prefer a good driving little A body with a slant that gets good gas mileage . A 170 cu in is my choice of motor and it serves me just fine with a 4 speed and the 323 7 1/4 sure grip behind it. All good components when used as they were designed to be used.