Thank you all for the responses on some ideas on how to lift a 6x6 M35A2. I have contacted Black Rock Fab. and they can make the 8 inch front leaf spring brackets to handle the front part (they can make 8 inch brackets for the rear if it was going to be bobbed like Hank's Deuce which is an amazing build and very impressive looking truck). For the rear, I like the idea of using 2 (one for each side of frame) 8 inch high pieces of 3/8 or 1/2 inch thick square tubing with the ends capped off for strength, welded to the frame where the tandems are originally located, and then the whole tandem assembly bolted below that. I know the drive shafts from the transfer case to the front axle and closest rear axle might need to be lengthened, and some sort of drop pitman arm to correct steering angle. I was thinking 395's were 46 inches tall, or that 46 in. tires were the size that just barely fit on the rear tandems without rubbing together..but anyway, whatever the size tire is that will just barely fit on a deuce and 1/2 without rubbing would look good and proportional in my opinion with 8 inches of suspension lift. I like to think of it as having "5- ton attitude with Deuce and a half practicality" Anyway, thanks for helpful comments and advice.
Shane