Congrats on the new toy, you'll love it!
There could be a mix of parts on your machine. For instance, the rear supports on the ROPS were made from the main loader arms on a 310 loader.
The grill matches 310E, same as mine. The shop manual is pretty much "one size fits all", covers the whole 300 series, well worth it. Parts book is individual, as well as the Owner's manual which is also kinda nice to have.
I'm not the only one in the forum with a version of this machine, so almost any question can be answered, from paint to piston.
Where are you located? I have a couple/few hundred pounds of parts looking for a good home.
Case Nutty is right about the tranny/final drive oil. Use only GL-1 (Straight Mineral Gear Oil).
Here's a link to the Case parts pages for the 300 series.
https://www.mycnhstore.com/us/en/ca...zers/naer23cra051300/cn/NA_E_R_23_CRA_051_300
Messicks also upgraded their site, showing all the obsolete parts where Case doesn't.
https://www.messicks.com/vendor/case?nav=9581#scroll-spot2