DOn't know about the glass, but I expect that is pretty straitforward by shoving a piano wire through the seal and then using it to "saw" the glass out.

I did remove the aluminum trim off a 244. If your 144 is the same it was held in by rivets so there is no easy way. I was in a junkyard and so grinding the heads off with a dremmel was not an option, but it's probably the best way. What i did was used a chisel to "cut" the very narrow portion of the aluminum outboard of each rivet and then I was able to worry the trim out with just a little bending. It isn't perfect, but it looks good.
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Andy in St. Paul, '91 745 Regina 194K mi, '89 244 138K, '87 245 RIP