Originally Posted by
Trefmawr
Udp88 - I'm in an 80's campervan myself, and I know there's a few others in here doing the same. So far my mods have been very cost effective, so you can definitely do a full winter setup for under $5k. That being said, the more money you have, the better a rig you can build, but if you're going to be spending $10k, I'd first upgrade the van itself.
The best time to do any winter mods though, is when you're doing major work anyways, so you can completely gut the bastard :D
The two biggest things (IMO) that a rig would need for winter living are insulation and a heat source. The better your insulation, the easier it will be keep heat in your rig and the less energy it will require to bring it to a comfortable (to you) level.