Thirty + years ago I had to do exactly what Cab touched on (tree blinder). My duster was running 9.80-10.00 quarter mile times on super stock springs and even staging at 1200 rpm I would redlight on the last yellow so I put a visor on my helmet and I put about 4-5 pieces of black electrical tape across the top of the visor. I could lower my head in the car and BLIND out the other yellow bulbs. As soon as the last yellow came on I was gone. It takes out the anticipation and makes it more like a pro tree. Worked for me.