Angelo, sorry it has taken me so long to respond, I'm so busy these days that I have a hard time getting on here long enough to just read the posts. If you're wanting to do the swap just to have a hemi in your Cuda then go for it. If you want to do it for power, there are easier and cheaper ways of getting there. The old hemi's are cool, but they are expensive to build up, and there isn't a lot of high performance stuff out there for 291 hemis. For the info on what I had to do to put the 392 in my Cuda I have a pdf document at
www.thehemi.com . Scroll to the bottom of the home page and click on the Tips & Tricks link, then click on the lower 'Early Hemi Installation in B & E bodies'. The article above it covering basically the same thing was done by Charlie Gluck, and is okay, but has some mis-information. I would read them both, as there is good info in both articles, Charlie is just a little off base with some of his stuff. Hope this helps. If you have other questions feel free to email me, my address is in my profile.