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Curious as to how many 73 GTX sunroof cars are known?

The combined Road Runner/GTX package started in 1972 and continued until 1974. If you wanted a 440 in a 72 to 74 Plymouth B body car,you would have had to order the GTX option package. My friend owns this 72 Plymouth Road Runner GTX U code car.

How about a roached Petty Blue Road Runner with a sunroof?
Doesn't answer your question, but it's one for a RR on the total production.
Friend's car, I took this pic.

I cant tell the year from the angle, is it a GTX?
I'd have to double check on the year, but it is a Road Runner, Petty Blue, sunroof, small block, auto.
It's been on that rollback for decades.
I always thought that simply ordering a 440 in a '74 RR gave it the GTX badge.

as far as sunroof cars, I seem to recall someone saying that in 73 (maybe only 74) they made 4 in black, 4 in red, 4 in white and 4 in blue (at a minimum...but if you look at total 73 RR with a 440, it's pretty low, and if you think of how few would have a sunroof...I have to dig back through some old files
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