I bought a lund clear poly bugguard for my new truck, it is supposed to be paintable. It says to paint the inside of the guard, question is is there any prep work or anything that needs to be put on the poly or do you just paint it?

 

You can just paint it. Just use a good degreaser (water soluable) or Naptha (solvent based). Wipe the backside down good to remove any contaminants. Mask off the front and go for it.