Interested in big block swap into 67 cuda

Lots of ways to accomplish this, but it won't be cheap. The "better" rods of the motorhome engine really aren't better, just heavier. The pan won't work, but it has been reported that you can use any passenger car pan if you use the 73-76 center link which won't work with your 67 k-member. There's lots of info in the tech pages at Big Block Dart.