I am 6'2 and I sat in the backseat, and once I got the seat to move it was fairly easy to get back there and there is plenty of leg room but the head room was alittle tight. But it was not unbearable for the 3-5 minutes I was back there.
On a side note....... if you are putting anybody besides kids in the backseat they should be thankful that they have to opportunity to ride in a Camaro and wont complain.