I'll preface this by saying that the photo
is not my truck, but it's on 37's.
I'd go with either the RCD or Dixon Bros. Ranger kit for the front, sprung over on the rear, with fiberglass fenders you might not need a bodylift, or use a bodylift.
You will need more gear to turn 37's, which is an issue because AFAIK the highest gear you can get for the front Dana 35 is a 4.56. The Trac in the photo is a 4x2 and it has 5.13 gears in the rear.