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

Possibly the only tucker to race is NASCAR

it's all written up, from Dan at Hemmings http://blog.hemmings.com/index.php/2008/12/24/seeing-really-is-believing-a-tucker-did-indeed-race-in-nascar-and-we-found-the-photo-to-prove-it/