The box I'm fitting up is from an 86 C10, the truck had 61K on the odometer($65.00 at the U Pull It), there are some low mileage units around. My truck is 2 wheel drive, the mounting is basically the same, the drag link and pitman arm are similar. I did make a backing plate from 3/16" steel to go inside the frame rail to add a little more strength.
I would love to see some pics of your engine, I have always wanted a 348 or 409 "W".
