After fighting off a killer head cold for about a week now, I finally got out to my hangar to look for these. I knew they were out there somewhere in my stash and I found them yesterday. I bought them thinking I could use them on my 1965 "E" model but the where a little short. When mounted, they were so tight, I couldn't get my fingers under them to get a good grip. So, I made my own. If you think they will fit your 150 (I'm guessing a later model than mine) I'll send them to you. From the inner most area of the slot, they measure 7 1/4 inches. PM or email and I'll send them to you. You can reach me at flymach86@hotmail.com Cheers, Elliot
"Maintain thy airspeed, lest the ground arise and smite thee".