Some vehicle considerations.
1.) What kind of vehicle do you really want? If you use it just for living, moving through roads and fields (rarely through small sections of cities), you don’t even need hdframes, also makes it easier to make the vehicle amphibious. Armor plating is the most important part. It’s easier to make a new vehicle from scratch than to change frames however.
2.) Your driver’s compartment should be a single space like .|‾|. where . is quarterboard and lines are reinforced glass. This is to prevent you from being shocked/yanked/shot with acid when turning. Relevant if building a true weaponized death mobile. Also helps with lighting the sides of your vehicle at night for your inboard mirrors without lighting up your driver’s seat when turning.
3.) Critical components like the vehicle engine, gas tank, battery etc… should be in the middle of your vehicle in a square with armor plating if you intend to ram through cities. The back of your vehicle will take hits as you will often have to reverse over zombies.
4.) Ideally you’d build a bumper for your vehicle to absorb impacts, with secvan you just have to be aware that you can easily hit the point where you need jacking 17 (steel boom or airjack) to change tires if you go expanding with more hdframes.
5.) You can get extra storage space by replacing the doors with heavy duty hatches.
6.) The only must-have accessory in your vehicle is the welding rig (requires LOS for crafting and be lit up to fix gear) and recharging station, workbench and freezer are nice, rest are completely optional and only if you have the space. Just keep your tools next to your crafting spot space because use actions like reload, unload, activate, eat, read etc… only work within one tile distance, important to keep in mind when deciding where to put what in a larger vehicle.
7.) Remove the backup beeper from secvan and add a muffler. You’ll also want an electronic control unit in your crafting space so you can trigger aisle lights from there instead of having to move to the driver’s cabin. You can add curtains and door motors in your windows to open/close all curtains at once from both controls as well.