I have a 73 Superior Coach wide body van, Chevy 350 (5.7). The whole body is 18 inches wider, bumper to bumper. A pretty rare van. In 2012 the engine died. I wanted to get away from the quadrajet that I could not keep adjusted. I bot a 91 van $800. Had engine rebuilt $1100 and trany $1200. Swapped out the wires and computer and installed engine & tranny myself. Swapped out other stuff like steering wheel. Now I have fuel injection, overdrive tranny, tilt wheel, variable speed wipers and such. Went from 8-9 mpg with carb to 11-12 mpg with fuel injection. Now have 30,000 miles on the new engine. I am a happy camper. Hope that gives you some help with cost.
