| The Nismo cooler includes the 2 shorter lines attaching to the cooler itself, not the longer lines running from the engine to the metal lines that pass around the radiator. The oil cooler lines we currently list on our site in silicone are the longer lines. Neither of the longer lines are supposed to be restricted. However one of the shorter lines (coming out of the oil cooler) does have a restrictor inside. As of today we actually have these shorter lines in stock in silicone but haven't listed them on our website yet. We have had the proper sized restrictor made which will be included pre-installed in the proper line.
Russell Floyd Z1 Motorsports www.300zx.com 1990+ Nissan Z specialists Used Parts, New parts, Service/Repair and Performance Z1 Motorsports Exclusive Parts Line 2877 Carrollton Villa Rica Hwy Carrollton, Ga 30116 770-838-7777 770-832-9253 (fax) 
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