i tried the bars between seat, toby is fine back there.i bought the 8 dollar velcro soft boots,they work great also.threw a bedspread on floor to help with dirt etc.
took him for ride today, opened the sliding rear window and he stuck his head out the whole time we were out. this is best set-up i ever had.the truck is CHEVY COLORADO EXTENDED CAB LT2 PACKAGE.