P4: This is our complete conversion kit, consisting of both firewall and side panel fasteners (studs, grommets, snap rings, and rubber plate mounts).

RET: Retro Kit, for our customer who have already converted to our Skybolt fasteners in the past but would like to upgrade to our newest generation plate mount. (Does not include fasteners, grommets, etc.).

SD: Horizontal (side) panels, converts the existing fasteners, grommets, snap rings and receptacles on the side cowling only.