8r4 or 8h4 cdi box question

Sx Viper 700

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Joined
Jan 12, 2015
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15
Location
tupper lake
I have a 80 enticer 250 motor it takes the 8h4 cdi and i have an aftermarket hewtech fireplug cdi that is an 8r4 i was wondering if i could use that on my motor and if so i was wondering if anyone knew the differences?
 



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