The 75 will be different, much as I loved the 40 living "next to" a vehicle can be a real pain in the horizontal sleet, so the 75 will have a tilt-top with solid sides. We'll still live outside a lot but when the weather turns to crap we'll be snug inside with the heater on
I've got the chassis and will start the build next month I think. Meanwhile I'm in the design phase, here's a teaser.
Roof up
Roof down.
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Rob