Tips on installing rubber front spring eye bushings

Based on responses to my earlier post about the use of solid front leaf spring bushings, I've decided to replace them with stock rubber. After looking at the new bushings, I don't see a way to press them in just by contacting the outer steel shell. Can I just press on the center sleeve and rubber? Will it push the rubber out the other side? Hoping for input from someone who has done it. This is a first for me.