No, shiny new Wilwood's in and of themselves will NOT get you penalty laps. What they will get you is a lot more scrutiny from the judges.
It's the other things that they find while scrutinizing the rest of your car... the new belts and hoses that you forgot to include in your budget... the freshly painted, yet covered with dirt and suspiciously stiff shocks that also didn't find their way into your budget... the new distributor, the new valve cover gasket... things like that.
If you have a straight up OBVIOUSLY well-budgeted LeMon, brake upgrades won't get you penalty laps.
The judges won't bat an eye at your prop valve.
Lemons South 2008 - Fail, Lemons South Spring 2009 - Fail, Lemons Detroit(ish) 2008 - Fail, Lemons South Fall 2009 - Fail, Lamest Day 2009 - Fail, Miami 2010 (Chump) - 2nd!, Sebring 2010 (Chump) - Fail, Cuba 2010 - Crew Chief, Roebling 2011 (Chump) - 8th!, Sebring 2011(Chump) - 19th!