Yeah I know they are heavy. Especially the quad cab. I've seen 13.5 sec 1/4 mile times, so maybe a tick or two slower than the SRT-6. I really like the single cab, for it's lighter weight, but I found a steal of a deal on a quad cab. Selling for regular cab price and with only 6k miles on it. The guy is asking $29,500 or best offer. thats' for a truck that had a $55k sticker new. Ouch.