On either one I would make the TrailBlazer in a slightly smaller font and move it up into the window area leaving room for the SS to fit within the car outline.
2008 AWD - efans, CAI, Kooks 1 7/8, tune, trans cooler, Yank 3600, FLT Lvl 5 email@example.com Updated with FLT lvl 7 11/2015
2011 CTS-V Sedan - stock for now
"Natives who beat drums to drive off evil spirits are objects of scorn to smart Americans who blow horns to break up traffic jams." Mary Ellen Kelly