Here you go for the grills:
https://www.etsy.com/listing/106891119/allison-speaker-8-woofer-grill-for?ga_order=most_relevant&ga_search_type=all&ga_view_type=gallery&ga_search_query=allison&ref=sr_gallery-1-8&organic_search_click=1&col=1
As to the woofers, are they in that bad a shape or is it just the surrounds? Where are you located. There's someone in NJ who replaces surrounds as well as PA. If you're handy, you can replace them yourself.