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			So you have an FC, but you're thinking of putting the twins on from an FD? 
Not so sure it would bolt up correctly w/ clearing the lower manifold. 
 
If it does fit, they'd have to run in non-sequential mode. As for gains, I would think it would be slightly more efficient than the stock FC HT-18 turbo, but probably not worth the hassle. I'd just drop in a BNR stage 3 or similar...
		 
		
		
		
		
		
		
		
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