If nothin else and you're really wantin to go fast maybe look at a different gear ratio? I daily drove my 3.54's on 37's no problem. Egt's got warm on a hard pull but with the 305/50's it's not a problem. Wantin to say my rpm's are around 1700-1800 at 60 or so, I'll have to check again when I drive it. But I've towed with it plenty and it does fine. And I can promise you it's still pullin like a freight train at 100mph haha