DocWhiskey
Observer
I'm not a super huge fan of short arm 4-links, but for the most part that conversion doesn't look too awful bad to me. The coil bucket setup is a little funky but it at least looks like it might have been done well, if that makes any sense. Sometimes hard to tell from pictures. I'd have to lose the tall lift blocks out back. Don't like. I'd at least want enough spring to get them down to 2" max.
Not sure you'd be able to cut the coils out and reuse that axle with Chris's leaf system. He's the best person to ask.
The van itself looks to be in very good shape, for any age really. I thought I did read in there somewhere that the brakes and what-not had been gone through, at least up front.
If it were me I'd run some numbers on the cost of 2WD version of that van, plus what it would take to do a Ujoint conversion, and see how they compare. I'm willing to bet the one you're looking at comes out cheaper. If I thought the Colorado van might be the way to go then I'd consider if it was worth the potential loss of a round trip ticket to go check it out and drive it. No way I'd buy it sight unseen, pretty pictures or no. Drivability is the key issue here I think.
I did my own ujoint and even then it isn't cheap. I'm not sure what Chris charges to do a complete conversion but I seriously doubt it will be comparable to what you're looking at, but...the guy does world class work and it shows.
Let us know how you go.
I have some rough numbers based on looking at the vans on the market (online at various sources including those listed in this thread and around me) as well as a quote from Chris over at U-Joint for a turn-key conversion; and barring anything majorly surprising it's looking like this would be a really cost-effective way to get something that's about 90% of what I would like it to be and then be able to tweak it with their gear. One major bonus as far as I can see is it having the major hard parts already located and installed.
I agree with you about the lift blocks in the rear, I would prefer to have "more spring" as you say. I actually have an email in to U-Joint right now asking his opinion on the van and whether it would be a good idea to snatch it up and then throw some of his components underneath or if that's even possible. Based on my limited knowledge it would really just be changing around a few suspension components (trading radius arms/hardware for leafs/hardware mostly, right?) so it doesn't seem outside the realm of feasibility. I've exchanged a few emails with Chris and even just from that and his website/Instagram/Forum presence, I can see that his reputation is well-earned indeed, without ever having laid my hands on any of his parts or vans. I'd love it if we can work something out.
It's an extremely tempting van, I'm doing my best not to let excitement get the best of me since I haven't yet actually owned a van and therefore don't know all the pitfalls to be aware of.