Dimension 7

Hello, I have an issue regarding at least one missing part. I installed the mod and I cannot find the cockpit! I have looked and looked and uninstalled and reinstalled and no luck. Any idea what might be wrong? It looks like I have all the files in the directory. The only thing odd is all the objects I can find have a file with a .MU extension type file and the cockpit has no such thing in the base folder. I am running KSP 1.2.2 and also I do not has RO installed and would like to see if I can get help finding or getting the what I need to get the cockpit. That is the only part I seem to be missing as well. Anyways any help is appreciated. Thanks!