The v8 sho always gets the "Its the slow one" from everyone... however it makes a flatter torque curve, more hp, more torque then the 3.2 AND freaks people out when they find out the Taurus comes with a v8 .
Just remember the v8 sho atx has it all over the v6 atx. The v6 mtx is the fastest simply b/c of the manual option. 3.4 yamaha/duratec would be all over the 3.0 yamaha if the v8 came with a 5 or 6 speed. And if you want to go for a top speed run, you better believe I'm grabbing the v8 Yamaha/Duratec before I grab the suped up vulcan v6.