I have this going on another post...
they were '93 models
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http://en.wikipedia.org/wiki/Ford_Explorer
"In the film adaptation of Jurassic Park (film), 1993 Ford Explorers were used as transportation around the park."
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http://www.imdb.com/title/tt0107290/trivia
"To give the 1993 Ford Explorer XLTs the appearance that they were driverless and were running on an electric track, the..."
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http://www.johnspangler.com/models/j...assicford.html
"1993 Jurassic Park Ford Explorer"
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http://www.imcdb.org/vehicle_79165-F...orer-1993.html
"In that case this would have to be a 1993 Ford Explorer XLT"
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http://www.zercustoms.com/news/2008-Ford-Explorer.html
"1993 Explorer Limited introduced; Explorer appears in movie “ Jurassic Park “"
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http://www.culttvman.com/marc_kimbal...ic_park_v.html
"recently completed the standard 1993 two-door Ford Explorer model"
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http://imcdb.org/vehicle.php?id=3105...317dfa54c36902
"1993 Ford Explorer Eddie Bauer... running boards were only availible on XLT and Eddie Bauer models"