www.drivethrurpg.com
Rules for modded vehicles, personal heavy armaments, and even Brotherhood of Steel-like combat suits. All of those things in a Cyberpunk 2020 sourcebook from 1993. I also hear there are some suggested options in the back of the original book but I don't have access to it.
But further, and I don't mean this sassy:
You may have played Cyberpunk, Cyberpunk 2020, or Cyber Generation. Maybe you even played Cyberpunk Red.
You must consider the technological advances we've had since 1990... The difference between then and now is the same amount of time between Cyberpunk Red and 2077. It is not the setting you are familiar with, because it is
not the setting you grew up with; its world has not been stuck in time.
To that end there is a 65 year gap between the first edition Cyberpunk setting and Cyberpunk 2077. Here in the real world, 65 years ago this year, we invented the Hard Drive -- and it was as big as a refrigerator. The computer was the size of the rest of the kitchen.
So, what do you think the practical limitations would be for someone weaponizing their vehicle would be? What would prevent cyberware from becoming so ubiquitous and relatively inexpensive [over the course of 65 years] to prevent more people from having more of it? What advances would we miss out on that would keep them just as dangerous to the user as they were 65 years previous? I feel confident that if there is literally an arms race on the street, nevermind the extra few world/corpo-wars, that weapon and cybertechnology would have advanced a bit.
Just, try and enjoy the mostly-cannon future of your beloved setting. Remember it was good enough for RTG to wholly stand by the creative decisions and base Cyberpunk Red off of where 2077 landed.
https://www.reddit.com/r/cyberpunkgame/comments/bjjeuk
So, in short, it is in no way disrespectful, because the man himself is proud of it.