Been there before, Measure X many, if in dought, a 1mm pilot hole to be safe then get under ( Put a strong light source on the inside of your van to show up the pilot) and check total clearance. I take pride and self satisfaction, in a neat well done job.
I'm starting to get the tingels now. Best of all our camper is on its way to a new home in country NSW . Can I supper impose a picture of Your van and post it on our driveway. Your van looks great.
Finally got away Wednesday around 2.30pm heading for Adelaide. Free camped at "Native Water Hole" a few K's East of Kiata. Fired up the diesel heater and with the electric blankets on setting 1, and CPAP machine through the inverter a very comfortable night. Got to the business in Brompton to drop of a sample for them to blow me a couple of gyroplane windscreens which we picked up late yesterday. Tomorrow heading North to find some warmth and to use the diesel heater again as we have been in the Adelaide CP for 3 nights. We have caught up with Eril's sister, and now keen to get out away from the population.