Are the rad support bushing all the same on A body from 68 to 72 The ones between the rad support and frame

 

Most vendors sell the Chevelle bushings. Cutlass is not the same. Fusick has correct core support bushings, as does Inline Tube.

 

I replaced all my body bushings including the ones on the core support in '18, I really lucked out as everything unbolted with no problems!. I bought everything from Inline. Their core support bushings were a good 1/8" thinner than my originals so I had to add shims(like the assembly manual shows) to keep the sheet metal aligned properly. Lucky for me my local Napa store had the large body shims in stock in 1/16" & 1/8" thicknesses. My original core support bushing had no shims. You wouldn't think 1/8" would make much of a difference but before I added the shims on top of the new bushings the sheet metal was all out of wack at the front!! Big gaps at the front edge of the fenders!

 

Thanks Joe for help

 

Thorton also has the square bushings that I purchased recently. I have some also from Inline, I'll check their relative thicknesses and report back.