Best method for putting a Hemi in a 69 Dart

to make a long story short, back in the 1990's I was in the process of building a 426 Hemi Dart convertible and I had everything accumulated and started taking the car apart to paint when I had a house fire which put my project and for that matter, my whole life on hold for 5 years. After that I had to put a couple of kids through college and buy another house and run a business all the while the Dart has been sitting in a warehouse waiting for the day when I could work on it again. The Hemi has long since sold with another Hemi car I owned and all of the other parts went away. Now I'm retired and have the resources to start again and the question I have now is what's the best way to install a Hemi in an A body now? I planned on using elephant ears back in the day but with all the new stuff that's out now I hope there is an easier way. The Dart is still apart and I just took it to my buddies shop for a complete makeover, lower quarters, rockers, inner fenders and the radiator core support which is where my decision to build a Hemi again came from. I plan on going to a 26 inch radiator core support to help cool the beast. I am also planning on using a tubular K member and upper lower control arms with adjustable struts. I plan on driving this car and it's not going to be a race car so I'm not concerned with the racing aspects of everything. I plan on running a manual trans and would love to run a Viper 6 speed if I can make it fit. Any suggestions will be greatly appreciated.