SR20DET Baffle Help

[CSUPUEBLOTIM]

Okay so I have been going through everyone's build threads/pics for some inspiration and info and one of the photos made me say crap. I got my engine back from the machine shop and they installed the bottom end and I realized I forgot the baffle that is in the picture labeled baffle when I dropped the engine off. Its in my pile of parts so I do have it and know it was not installed. My question is how important is that I install it and if so and I do have to undo the bottom end anything special i need to do to not mess up the ARP main studs and new bearing surfaces? Any info is greatly appreciated. I am wanting to button up the bottom end of my engine and get it on the stand so I can work on final assembly. Thanks.