We're talking upper A-arms here on an '88, right? The bushing itself should have a metal sleeve (mine was brass-colored steel) lining the hole--the new sleeve comes with the bushing kit. Grease the bushing hole before you push that sleeve in. The A-arm spindle slides into that sleeve. There should be a metal sleeve, about 1.5" in diameter and 2" long already installed on the original A-arm. You'll re-use this old sleeve so leave it there. The bushing slides into that sleeve; You probably should put it in a vise and gently press it in but grease the inside of the sleeve before you press the bushing in. There should also be a large (thrust?) washer against the inner and outer ends of each bushing. The washers keep the A-arm from sliding back & forth on the bushings.
Lower A-arms bushings are slightly different and have that extra "doughnut", which goes on the inside end of each bushing. Also, they have no end-washers. Because of the way the lower A-arms mount to the frame, washers are not necessary. Otherwise, the same general techniques apply as outlined above for the uppers.
If I left something out or got something wrong, hopefully someone else will fill in the blanks and/or supply some pics. I think there are some good write-ups in the archives. Good luck.
Edited for clarity.
[This message has been edited by SeattleRedFormula (edited 10-28-2003).]