I need more speed. I know, I have the Viper for that but my xf is my daily driver and has 65k miles on it and the powertrain warranty is almost up. I'm either thinking of getting something else or trying out an SRT-6 with lower miles. It would be my first vehicle in 11 years without a stick but the idea of an 11 second daily driver is appealing. My question is, how reliable is the auto after you mod the engine with a tune and pulley, etc? Any reported breakdowns? Also, besides the IC pump, what else goes bad?

Thanks.