Are you sure Seabronc? I might be reading it wrong too but it sounds to me like he bought an engine with a 2bbl, wants to swap it in his truck. But wants to keep the 4bbl. So swapping the 4bbl intake onto the new engine seems to be the answer. After writing this I can see where your coming from. Take the 2bbl off the new engine and swap to the old one. If thats the case and its a quick fix there are 2bbl to 4bbl adapters. I have one on my old 74 comet. Needed cash a few years ago and a buddy needed a carb so I sold it. I put the 2 barrel on the 4bbl intake via an adapter. It has incredible throttle response and power off the line but at top end its definately not near as powerful as the 4bbl