What is the largest size that can get under height restrictions and still be stealth? I.E no raising roof which would give the game away.
Transit connect size would fit under higher restrictions but then a low roof full size transit would as well. Maybe a mid or long wheelbase low roof transit panel van?
If roof rack maybe it’s to tall to it under. This could be removed or if only just too tall you can even let air out of tires to fit under then have a compressor to reinflate
Good question but not that easy to answer as there are many different height barriers, I used to have a swb low top transit and often came across barriers that I would never have got under. A lwb transit connect or lwb vw caddy would be your best chance at fitting under most barriers without having to let the air out of your tyres, I'd imagine that could get very annoying very quickly.