Musclecarblog.tumbler has a great focus on late 60's high performance musclecars, and Mopars particularly

Of course I love this R/T photo, I've got an R/T... and my last musclecar was a Superbee that looked exactly like the above R/T, with a bee on the grill instead of the rt.

For lots more great musclecar photos, and not just mopars: http://musclecarblog.tumblr.com