There are a few unanswered questions. What size converter 9-10"? What was the 60ft time? How about your 1/8 mile incrementals? Cam specs? How do you have your caltracs and shocks adjusted? Air pressure in the drag radials? Cool Roadrunner I never knew they were that heavy though. Good thing you have that big hemi under the hood!

Like others have said, if its mostly a street car, I would say you're fine. An 8" 5200 converter will surely pick up in the 60ft, but at a streetability price.