Well it's done. Home Depot had almost no foam board and none in the thickness I wanted. Had to settle for the reflective bubble roll which actually worked out pretty well. I also opted for the masonite board used for cabinets. Cheaper than Luan and won't delaminate. It also has a smooth side so that makes the install look better. Here are some of the pics.
2015 Cherokee Limited 274DBH
2000 F250 CC SD V10 4X4 8' bed, 4:30 gears, SCT X3
2007 Mustang Convertible V6 - Lots of GT mods
1965 Mustang Coupe I6, 3 spd. manual
1963 Thunderbird Landau 390