from what im researching its the same intake, from what my marine guys are telling me most of the just use truck ones with minor modification. USA-1 race guy says go full aftermarket both are medially the same. why? no i dont have specifics, theres a ton of info out there just no conclusive info. grab both and flow test them but.......i will personally take their word for it if they are saying its not worth the time.
if im wrong im wrong but i ditched the OEM on a Friends truck and just used a standard square bore FI intake with an elbow and 100+ ls style TB, then it went to CPCC, running a 411 computer with an 8.1 base tune, modified with injector and firing banks swapped to accommodate the cam of the 7.4;s firing order.