As I recall, your coach got banged up during shipping, correct? .... and you were looking for a front grill???
I'm still pursuing the fellow in Texas that was parting out a 310 that had been involved in a flood. I mentioned your need for a grill, so I hope he set it aside. At this time, the unit has been cut and sold for scrap, but I believe he may have salvaged the window units among some other things.
Last I spoke with him, he was too busy to talk about my parts needs. I need to get after him again. Let me know if I should be on the lookout for anything on your behalf.