Hi,
I just bought a 94 G20 with 106K on it and has been very well serviced and runs great. I got an estimate to do 4 struts because I figure they probably should be changed. Estimate was $600. Not really sure what to look for as far as what kind of ride you experience if they need changing so any help would be appreciated.

You will find everything you need at http://www.g20.net . There is a Suspension section, so check it out.