Yes there is I run a 168 tooth flywheel in my 64 But i'm also running a 4speed But if the block does not have both holes for either starter then You woul dhave to drill it yourself. the 168 starter is a stagered bolt where as the 153 is bolted straight across Just swap noses and get a v8 flywheel Or buy a v8 starter if the block is drilled for the stager. hope this helps }[oooooo]
Ps every 250 I have already has both.
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NovaMan/Twisted6/Larry