'60 Disc Brake Conversion with Torsion Bars?

[Too Slow '90]

I have read through the conversion FAQ's and I can't find any info on converting to disc's and leaving the factory torsion bar suspension in place. I picked up an'86 donor but I can't bring myself to swap the crossmember as the '60 is a one owner, original truck and I would like to leave as much in place as possible but still have a few modern conveniences/safety measures. What are my options? I would also like a dual circuit master cylinder. The truck s a '60 short bed fleetside with a 235 and three on the tree. Any guidance would be greatly appreciated. Thanks in advance.