Not Ranked
From what I can see, the splined wheels being sold by Dayton are identical to the center lace 6" wheels that were used on the later versions of the street 289. Folks in the "orignality" forum may be able to clarify, but my understanding is that there were several evolutions of the wheels and flares on the "slabside" as the motor went from 221, to 260 and finally, 289 ci, with the wheels growing slightly wider with each iteration.
Jim
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