Happy Thanksgiving, everyone.
I need the measurement (length only) of the vista dome used on Lionel 18" aluminum streamline passenger cars.
The measurement will allow me to decide if I should purchase domes from Lionel for the four dome cars included in a set of eight 21" streamline aluminum cars purchased 20 or so years ago. The cars (shells really, though they do have floors and ends) used Lionel's extrusion and car ends. Lionel sells the domes for the 18" standard dome cars for $20 each; and, I'd prefer to have a measurement before resorting to buying one to test fit.
Again, Happy Thanksgiving to everyone.