I have a “blue whale” excellena (v1) which looks completely awesome but has a large number or ridiculous design decisions like not fitting through a standard door.
Yours sounds like the much more practical excellena 2. It even has a monitor rotation mech.
There is a great Excellena 2 restoration thread here which has a link to the service manual and all the part numbers. Have a read of that.
https://www.arcade-projects.com/threads/namco-exceleena-1-2-cabinets.13302/
How bad is the damage? If it’s just the plastic you could probably re-assemble it with jbweld, fill the cracks, sand and respray. If you post some pics you’ll probably get some great advice.
Probably best to start a dedicated thread in the “other hardware support” channel.
If it really is absolutely trashed beyond repair don’t dump it, I’ll pay good money for the coin door, coin chute, coin entry, harness, locks and other parts. Namco candy cabs are quite rare and collectible tho, stripping it for parts would be a tragedy