T2nr is right. Back in the day you could get about a tenth out of stripping the paint on the fins and bellmouthing the inlet side of the int. My on experience has been swapping the stocker out with the boost set on 16lbs and installing a dutt. neck stocker (two intercoolers involved) within 30 mins of each run and gaining 2lbs of boost immediately. This was done with a ta49 on bone stock long block during 80+ degree summertime temps. Quickwrench managed a 11.48 et with this set up on DR's and stock downpipe. CHeck out his sig.