hello guys, idk if some of you have read my post in the general area of the zx section, but i have a jdm fairlady car, and i want to find more info on the intake manifold, i have googled searched it and searched here but cant really find any facts about it

it has a cast of P75, and my throttle body has to throttle plates, is this intake manifold rare? i also have a non egr n42 that i knida want to swap onto the fairlady but idk if that is a downgrade vs the p75, if the p75 has bigger runners and a bigger plenum i dont want to go backwards

any info on it would be greatly appreciated since google brings up p75 as a honda ecu, i dont really care for hondas, i mean no offense lol

 

sounds like a diesel manifold