700r4 and t-case

[Ron]

I've had a Chev 350/727/Dana 20 in my Scout for years. This is a DD and fuel milage has become an issue. I have a good 4.3/700r4 out of an Astro van. Been thinking about installing it. Is this 700r4 a good candidate for a 4X4 application? What would I need to hook it up to an Atlas or D300 t-case? The vehicle weights in at 3,900 lbs now with the V-8. Would the Scout be grossly undered power with the 4.3? Give me some feed back. My target is 20 MPG. Also, is there a good S-10 web site that I could post this trend? Thanks