Yep new rings ,cam bearings, Rod bearings, Main bearings, Needs to be line honed,the cylinders need to be honed and probably would not be a bad Idea to also get the machine shop to deck it.
You may be better off getting a used one.
I would like to rebuild one just for the experience in doing so on a 3800 motor.
You can get rings from you're parts store or ZZPerformance.