As you may know not long ago one of my meks was infected by a genestealer. Mad doc did some surgery and saved him (had to replace mek's brain with a squig poop but who cares) So see what he made with his buggy - added some orkish flavor.
Model fits 150x95 oval base. Full model only for assembly example, print parts and glue them together. Gunner same in size with GW ork boy, you can swap his body parts with bits you like.
Recommended for SLA printers
If you want to proxy BoomingDakking SnazzTrukk you can put grot on a front hood, something like that: https://www.thingiverse.com/thing:4764736
Have Fun!