This Upgrade kit contains a number of parts necessary to allow you to build any of the more modern B-1B configurations. The Revell kit, built out of the box, only allows you to build early B-1Bs. Included are accurate, detailed resin parts consisting of 2 towed decoy fairings, the late DAS fairing mounted on the bottom of the rear fuselage, as well as a selection of AN/ALQ-161 and early DAS blade Antennae not supplied in the kit. Detailed installation instructions. For the Revell B-1B kit.