My '80 Pinto Pony had a Offenhauser 4bbl intake with a 390 4bbl carb and a header. It was a blast to drive, but a cam and maybe some gears would have realy made it come alive,
Hot Rod Mag. did a story (early 80's) titled," More Ponies for the Pinto", which had three different engine build up instructions. I intended to complete the first stage but ran out of money. You might want to contact HR via internet to request a copy.
Hope this helps.
Jeff