Since you need to get them really tight, I use a long bar on them. I don't think I want to stick a 4 foot long bar on my torque wrench to check this.
I do not recall needing to use a cheater bar on my torque wrench to get to the specified torque ratings. I swear the specs are in the manual, but I can't check because I loaned it to the body shop. Let me check Vikki's site...