Out with the Small Block and in with the RB. What do I need?

Looking back on what I have done this project has probably been on my bucket list and thanks to another member on here a gun went off in my head and here we are. What I have is an original 72 H Code car that is pretty close to original. That's about to change. I have a RB that has been sitting on the stand for about 20 years and it's time to put it to work. I am sure somewhere in the archives there is a great thread about what I need to accomplish the conversion to a big block but have had no success in locating it. So is there a good thread about what I need in the way of parts and mods to make it happen?

What I have is a Complete Long Block, 2" TTI's, and a BB Transmission (727.) The car has Power Steering and will retain that. I have Hydroboost on the brakes and that is fab work plain and simple make room the motor. Any info is appreciated and if this question is like a broken record and someone can provide a link so I can get a good list going for myself that would be great.

Thanks,
JW
Motor mounts
Big block bellhousing
Bigger torsion bars
Rear axle???
Radiator
Fan clearance WILL be an issue and seems every solution is different. What works for some doesn't work for others.