Rachmaninoff
Observer
Suspension might be a bit of a stumbling block. Not a whole lot of aftermarket for minivans, especially in the lifting direction. Sometimes vans are based off a car chassis and share some suspension and drive train parts, but again, not much after market for lifting mid size FWD sedans. You'll also have to look out for the usual stuff like suspension geometery, CV shaft angles and stuff. Trucks are genrrally designed with more suspension travel, so doing things like TB cranks, longer shackles, etc don't cut in to suspension travel too much. Lifting a van that has itty Bitty control arms and McPherson struts could wind up making the vehicle worse off road and on, by stiffening spring rates and sacrificing suspension travel for ground clearance.
It's too bad they went away from full frame minivans. The Chevy astro and ford aerostar were built on s-10 and ranger chassis, respectively. Most chassis components were interchangeable with little to no modification.
Not trying to lift. I want slightly bigger tires, which it looks like it can support, especially because I don't think that the travel is that large. Just for mild stuff.
Just had a light bulb moment... look up the US version of Top Gear, season 2, episode 12. They crossed the continental divide mule trail in minivans. One of them was a Dodge caravan if I remember correctly. They didn't go into much detail about the modifications, but you can see the basics of what they did. Perhaps some inspiration and optimism for you! I was pretty impressed with what they were able to get those vans through.
Just watched it. I'll put it this way: since I need the vehicle for commuting, I'm not taking it anywhere that I'll need a winch. Lol.
However, it's clearance sucks, and there are roads in and around Sedona that I've seen cars take that I would only take something with a bigger clearance on. If any of you have been to Schnebly Hill Road, that's about the level that I want to say would be the max I'd drive on, and maybe shoot for a little better capability than that to be on the safe side of unpredictable terrain, while aiming for a little less than that on average for what I'd be willing to tackle. So, basically, I want to be able to do that without damage - mostly from just taking everything really slowly. The reason for this is just that I don't want to be replacing stuff because I don't have the funds to do that. So, basically I'm not planning on going too far just yet.
Thankfully, I can do trips under 3k rountrip miles that are absolutely stunning, given that I live in the southwest: the northwest and northern rockies are absolutely perfect for scenery, and yet still provide a landscape that is considerably foreign to what I've seen most of my life.