I just found an 02 nearby a guy is parting out. Looking up stuff now but most of it seems like it will fit on my 03? Thinking of grabbing the spoiler since mine is cracked and the front and rear bumper covers and rear tail light covers. Any thoughts? Radio head unit looks the same too.

 

02-03 are nearly identical for parts. About 98% are the same.

 

As mentioned above yes...larger majority of parts are the same and interchangeable. Rest comes down to trim level differences.
Spoiler, bumpers and tail lights you mention. same
as long as radio looks the same then it is. But if his is Bose and yours isnt? then no...they arent as easily swapped.

 

mine is the 6 speed 03. it doesnt say bose on it, I guess reading around the radios are clarion, mine doesnt say bose anywhere?

 

The body parts should swap right over. See if you can get his MAF as a backup so you have one when yours fails.