Authors like
Memphis and
XJ220 have re-done several of the original EA roster at higher quality, but I honestly don't know if they all offer damage (I do know XJ220's Porsche 993 has 3 upgrades). I even think that was part of a project back then, to re-create all original cars from the game in more detail.
I never put together as complete a roster as you're looking for, but still, here is my "90s" folder, although it's from 2010 and not up-to-date (it's missing XJ220's Mercedes SL600 and Corvette C5, for example).
https://i.imgur.com/P3mIm4C.jpgThe most recent release that could qualify is probably AJ_Lethal's BMW Z3 2.8, came out in June of this year.
On the subject of serial numbers, I don't know of any new tool than the original SNE. There's the Carmanager that comes with Jim Diabolo's NFS HS Mixer, but I think that doesn't really let you edit the serial numbers on the go. Have you tried that yet?