I know that on the Navi swap the navi lower with the b-series upper is not the greatest, But That's what I will be going with for now due to funds. And I think that since I will running a D1 on the motor I don't think it will be that bad. Well I'm looking for some pics of these intakes. Not sure but I thought the last time I seen one the coolant crossover was removed and a 4.6DOHC crossover was used. So I'm really looking for some pics. Thanks