I used a box from a 73 J4000--bought the truck for 100 bucks on ebay--Bolted right in-the pitman arm hole had to be enlarged slightly. Other than that no issues. I used the chevy pump that was on my small block as I planned on replacing the hoses during the swap anyway. On a side note I've sold the axles, trans, tq etc for a total of about 175 bucks to this point So even buying the new hoses I've made about 40 bucks to make the switch with a pile of parts to go---anyone looking for a stock box???lol