Thanks for your comments All.
Frank, the head rest is a separate piece on the Kit, not part of the fuselage, and you are right, I will fashion one from putty as I considered in the first place. You caught me being lazy!
Ken, it's too late to add an ash tray to the now closed cockpit. I'm always amazed at the commonly seen smoking in and around the aircraft in period photos. I recall back in my Student days an old instructor of mine who would light up and puff away in the back seat of our F-5 with an oxygen mask hanging from his face inches away from the cigarette...... used to make me just a little nervous!!
Cheers,
Lance