well i can prob help you pretty well. Car before my 2001 a6 2.7 was a 97 maxima se 5 spd. It had a y pipe, full exhaust, intake, short shifter, full coilovers, full stillen kit, konig's etc. To say the least it was pretty modified. I loved that car and still miss it to this day, it was a blast to drive. The a6 2.7 i have is chipped with piggie pipes and if they were to line up the 6 would win. What you have to understand is an a6 is a HEAVY pig and has alot of body roll in corners. If you do sways and coilovers it will obviously tighten up.
if your spending 8k you can get an a6 but it would have higher miles(actaully selling mine for around that price, pm if you want info) And of course with a bi turbo car it requires more love than a 4.2 N/A. Great car for what it is, a luxury sedan with a little power behind it
