ordered a md spacer and lower plennum (mrev kit, but bought spacer and plennum separately) from performance nissan and have a question that someone may help answer. i requested for them to send the lower mrev plennum, and the lower plennum they sent has a designation of mr1 and ml1 cast on the inside. looking on the pictures from motordyne's site, i can see the mrev that they display has markings of mr2 and ml2. please help me make sure that this is actually an 03/04 lower plennum that i plan to install this weekend.

 

The stock 05-06 plenum has different looking intake runners. Go to http://www.sah2o.com/intakeproject.htm

Better explaination and pics. I grabbed these from there.

05+ stock

03-04

 

really appreciate the post...thanks a bunch.