RX7 Lug Nut Conversion...

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2003.5 White Mazda Protege5
Ok, if you have read one of my other threads (rx7 problem...) you would have seen that I was given an 82 RX7 that has some problems. My old man and I are taking it on as a father/son project car. I was wondering something though. Is it possible to convert the 82 RX7 four lug nut pattern to an 89 RX7 lug nut pattern? If so, what all do I have to do?
 
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