11.70-12.50 600-650 HP what the motor will take i dont know most seem to do ok rob has 100 passes on his truck might just be lucky . you would not regret it i can tell you that much .
racing in the rain is really pointless, cant get traction below 65mph in and starting at speeds above that on slick roads is dumb to begin with. accident waiting to happen
I personally don't believe im on the edge at all at your mph your making probably 40 or more hp than I so maybe your on the edge. Once again torque kills I dynoed 552hp/920 ftlbs IIRC hp is higher than 552 but torque im sure is dead on.