Try this
http://www.littlepassengerseats.com/hummer_h3.htm
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by CampMaster:
Anyone get a fullsize, rear facing car seat into it?
Did you have to move the front seats forward?
or could they be fully back?
Please post photos of your install if you have them.
Can you get two forward facing carseats and one rearfacing car seat installed at the same time?
How family friendly is the H3?!?!?!? </div></BLOCKQUOTE>