Me and my mate have been playing 5th edition since we're not big fans of the new rules, it's good fun but you run into some restrictions with new models that weren't around back then.
So yeh, I made some custom rules for the new ork buggies (Boomdakka Snazzwagon, Kustom Boosta-blasta, Shokkjump Dragsta, Megatrakk Scrapjet, Rukkatrukk Squigbuggy). It's actually a fully customisable 'Big Buggy Builder' that allows you to make all sorts of custom buggies if you're that way inclined.
As for balance, no custom datasheet is perfect but I there's a few similar vehicles in the codex to base it on, and I tried to use existing weapons where possible so it shouldn't be too bad.
You can check out the datasheet here. Idk if there's any wider community out there for playing 5th edition but I thought I might as well. These rules should be mostly fine for 3rd, 4th, 5th, 6th and 7th edition too given they're all similar:
https://docs.google.com/document/d/1jP0hn3ROQKavp6O9dT42DEoyX6fp6EcN-0aSlh1LUcs/edit?usp=sharing
If you have any opinions feel free to leave comments.
(also I'm new here, sorry if i posted in the wrong place or anything)