It is going to be much easier (and free) to do it in AE. There are a couple of plugins for Premiere (not even sure if they still work in PP2), but they aren’t cheap for what they do.
If you don’t have dynamic link, once you are done editing, just export uncompressed, then apply the filter in AE, or use one of the tutorials to get the effect you need (that’s assuming you want the entire thing in old film look?)
Vince