Anybody use a 73 up duster heater box ina 71 duster?

spikekid999 said
id think all the 70-76 dart sports,dusters,demons would all be the same except for a/c and non a/c ones
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Nope . They discontinued the rallye panel after 71 and changed the case, controller, defrost ducting, pretty much everything. Still it may be possible to switch everything. Dunno