Hello Everyone, and thank you for all the really good information on the second generation Camaro! I have been restoring my 1981 Z-28 Camaro for a few years now, and have used the website as my go to for information. However, I am confused on the Proforged solid radiator bushings. My radiator support goes on top of the subframe, and my subframe has a square hole in the top. The Proforged aluminum bushings are interlocking and round. Am I missing something in the vague directions about putting a round bushing in a square hole? Do you have to cut a circle in the top of the subframe? I have been searching the forums, but haven't found anyone addressing this issue. Thank you.