I would go with the M/T drag radial, they worked better than the et streets and qtp, atleast on my car!!! Do you already have a c4? Jeff Wagner has his built c6 with two convertors for sale, I'm sure you could pick it up pretty cheap. I believe it is fully rollerized and its already freshend.
I have MT radials now and they wont allow me to leave on the brake. I figured the bias-ply of the QTP would soak some of the shock up and allow me to leave with a little boost. I do already have the C4 but I still might be interested. You talk to him often? Know what he might be asking by chance? I did see a video someone on this site had of his car running an 8.80. He only shifted once so I figured he went glide. Was good to see that car running again.

Keep the 3:27 in, I had mine for two seasons, maybe 50 passes, but remeber they our trying to hold 1300HP!!!