I ordered the wing walk material from Van's. The RV-7A numbers are pre punched. Or supposed to be. One of my didn't have the A prepunched, but Van's sent me a replacement really quick.
Notice there is no dash. That's because it wasn't prepunched on one of the decals, so i just decided to skip it, rather than call Van's for another.
I cleaned the paint with alcohol. I taped half of the decal in place and placed the other half. Then placed the top half.