trying to install roll pan on my 03 xlt

[richardo8900]

I have a 03 xlt 4x4 with a 3 inch body lift and 32.5 inch tires...black rims full dark tinted winows....i have a problem when i got my lift done last summer they didnt do it complete because all the parts were not in the box so now i have a gap from the bumer to bottom of bed because of the lift so i want to either install a roll pan or put diamond plated steel in the gap...anyone have any suggestions and tips on how to install or where to get the roll pan