I agree, I think a refresh for these cars would be killer, and should be done. Would love to see those cars in the pack in your style.

Tried running both mods together and they definitely don't blend well so I had to make a choice. You'll never guess what I chose. This mod is still amazing throuout the years

I think both mods are visually incompatible by choice.

Vanilla Vehicles Enhancer is going for a style to be more compatible with mod packs like Filibuster Rhymes' Used Cars!, The Motorious Zone and 1993 American Vehicle Pack, so they fit in without having to be discarded outright. It really works great with those and you don't really need Drive 90s anyway, if you choose to go with any of the aforementioned mods.

Drive 90s and for the most part PZK VLC, on the other hand, were made by strictly adhering to vanilla vehicle design principles, in theory not requiring any modifications to the vanilla vehicles at all. Short of scaling maybe, but I think that's something TIS should implement to the vanilla game anyway.

Both are great mods, but it might be better to see them as works completely disconnected from one another and pick one for each respective use case.