Seam seal and removing the drip edge

on my 66 dart 270 sedan, the seam sealer at the drip edge on the roof is all cracked up, rusty and needs to be removed and redone. I bought some Dynatron seam sealer in the tube, and want to get to work removing the old stuff.
I saw a few videos of 69 darts where guy takes a beer opener and prys the trim piece right off. Do you know if that works on the 66 Dart? it would seem much easier to remove the seam sealer if the trim is out of the way. Right?