I just completed my annual condition inspection with my A&P and we noted that the engine mounts are begining to show craks in the rubber. I looked at the plans and it references Starduster engine mounts but no other information. There is no reference to "Starduster engine mounts" in Aircraft Spruce's catalog or online. What are current builders/owners using for engine mounts (RE: Lycoming IO360 A1B engine)? Any guidance is appreciated.