I have a 71' Nova that I bought new body bushings for. I wanted to install the new bushings and saw that there are 3 different sizes. I know that the smaller diameter ones are for the rad support, but its the other ones that I am having trouble with. The remaining 4 are the same diameter but 2 are shorter by 1/4". The "instructions" that came with them say to use bag 3 in location 3. Problem is that there was no bag. Can anyone tell me which ones go where? Thank you in advance.