No one said it was impossible...we just said it takes copious amounts of time and money...neither of which most people want to spend on a 15 year old car...and let's face it...we're all gearheads here, we ALL bought THIS car to mod it...hell it a TT V8...why not? Me personally, after my manual swap, I realized I still wasn't going to hit my goals (similar to yours, 550-600whp) any time soon...and I wasn't willing to spend that much loot on a dated platform with no tech...hell I didn't even have Bluetooth...(keeping in mind these cars were still $25k-$28k back then) I probably would have spent enough to buy a D4 S8, and wouldn't have had as nice a car...I still say good luck with your project...would love to see it...