As I slowly return to utilizing my '67 F250 2wd as my towing truck I am looking at pulling the 390 and putting the 428CJ motor in it that I have had forever. While considering this I thought it might be cool to make it look like someone had swapped a CJ motor in it back in the day, manifolds and all. So I was wondering if anyone has tried to use those exhaust manifolds in their F100/250 and how they fit.