Is there a way to override/bypass a server-side handling file?

The only server I play on, recently got a new damage model and handling file and it’s just god awful, I’m a whitelisted mechanic and just had to repair my car 3 times in 5 minutes. Is there a way I can put a handling.meta file over the server file?

No there isn’t a way, the server forces you to use the handling file.
Contact the server admin if you have complaints.