As noted above...200-205 FWHP (240+ HP crank) is probably about the max you could get without going inside the motor. And that is with virtually every intake/exhaust mod + hand detail work and custom. careful ECU programming (see DEMONSVT profile). 2 or 3 people have docummented over 190 FWHP (230 HP crank) with all basic bolt ons. I think 190FWHP is a realistic goal (and I expect several new members in the "190 club" with the Extrude Hone UIM group buy!).
On the other hand, nobody has built up a N/A 2.5...people going inside the engine have gone to 3L (except for one built turbo 2.5L making 390 FWHP or about 470 crank HP!). With forged rods, better bearings, higher CR pistons, headers, true duals, hot cams, Extra Extrude Honed UIM, 3L valves + solid P&P work + upgraded valve hardware + upgraded oiling (ie accusump) + custom ECU programming to 8000+ RPM capability you could get the 2.5L to 300 HP+ crank and be streetable. It just that it would cost ALOT more than a lesser built, similarly performing 3L.
