I Own 7 Mustangs. Well, Technically 8 Counting My Kid's 01' V6, 5 Speed. It Doesn't Just Pop Back In, It's Wider Than Just What Shows & The Ends Tuck Underneath The Side Roof Rail Moldings. You Need To At Least Unscrew The 8mm Bolts On The Ends Of The Rails Between The Fender & The Door Near The Top Hinge With The Door Open. You Might Be Able To Get Away With Unbolting Just One Side. If He Let You Know He Was There & You Had Someone To Help Film, You Could've Prepped The Cowl To Go Back In By The Time He Was Done. That's Why He Offered To Come Back, He Knew There Was More To It.
It was a little aggravating that he just showed up with out telling me. What would he have done if I walked out there and said didn’t know you was here and by the way it’s the black mustang underneath the carport that needs the windshield lol