Lead on a 408. Should I do it?

Having driven my 408 for several years, I can say unequivocally, yes. Hell yes. I have so much fun driving this thing. Just last week I took a new Camaro SS, and last night an SLK55 AMG. I give no ground to anyone. If you want fast and great torque, do it. I went overdrive in mine and my top end is way high now too.