what year is your GC8 the later models, had a slietly better gearbox in them, so can with stand the HD exeedy clutches a bit more, ive got a exeedy sports tuff clutch in my GC8, with a 98 or 99 box, seems to hold up nicely. just dont go too over board with it. any box will break if u treat it like a piece of shit.
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