As big as you want to make it.
Grand Waggy 44 - Build or buy brackets, modify brackets, get high steering, alloy shafts, CTM's. Or, rework control arms and put in a newly designed suspension.
Ford HP44 - Cut housing (unless you want full width), build and buy the above.
Plan on $$ as the biggest issue. I had $350 in a narrowed Ford housing with stock inner shafts and Ford knuckles and it cost me around $1500 to get it rolling. That didn't include high steering or alloy shafts and I used a lockright to cut costs.
Later,
Lincoln