Would a power antenna on a 740 go easily into a 240 that currently has a manual (pull up and push down) antenna? What do I need to grab, and how hard is it to do the wiring stuff?

I went to a nearby junkyard today, and would you believe that they had NO 240s? I was quite disappointed. I was able to visit the two 740s they had in the yard, though, and take a look at what things might be able to go into my Brick.

The power antenna thing seems to be the best bet, though there was a chrome 740 grille that I *suppose* could be modified (I'd prefer to find a 240 one, though). Additionally, there were the less-than-frequently seen headrest inserts that appear also to fit the 240 seats (the 740's were black, and I've still got the ones for my 240 with a tan interior). Is there anything else from 740s I should try to grab? There was a wagon and a sedan, a regular 740 and a GL. Both were in okay condition (between the two, I could probably find a lot).
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'89 244 GL -- 103,553 miles (see profile for info on car)