i know its an Intake Manifold but it doesnt look like one from a D16Z6. i have a D15B 3 Stage and i need help before i start to do a bunch of porting on this IM and waste my time when i should have just gotten a different intake. can anyone tell me what this is similar too? 1. what IM is this and is it worth the time to port out? 2. what TB can i swap out too since this is not swapable with a B series as everyone on D-series was bashing me for. i know you guys are more helpful then those arrogant blowhards on D-series.