Well pretty self explainatory. Some backgroung information, I have a 2004 with a stock a3 with 125,000 miles on it now. The car had a greddy turbo kit on it in the past for about 30k. I removed the turbo kit a few years ago and have been stock since. I have decided to rebuild the ep3 again. Right now I am trying to decide whether to reboost the ep3 with a rev hard kit or another kit besides greddy, having trouble finding other turbo kits with the current a3. Or option two is swap the engine to either a k24a2 or K20a or a2 and a few bolt ons no boost. I am a little concerned about the milage on my current a3 but I have had no issues what so ever. I am looking for in the ballpark of 250-280ish hp with boost. My car will be a dd/ track car and would like to keep AC for some situations. Just wondering what you guys think.