14-02-2015, 04:33 PM 
	
	
	
		I'm fairly sure that there's been a few cyclones done with centre caps in the past. Can't see any reason not to bore it out, as long as it was done in a lathe so as to ensure it was perfectly central. TBH if it's just aesthetics I'd be gluing the pug ones on 
	
	
	
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