I just bought a 90 1/2-ton suburban. it has a350, 700r4, np241, and 10-bolts f & r. I am going to be swapping in a 14B full floater and making the front 10-bolt 8 lugs. My question is how much can I lift the suburban and still be able to tow. I am planning on towing my 74 K5 on a 2-axle trailer. I would like to go 6" lift with a 2" spring and shackle flip in the rear and 35" tires. Will this work? I know the 350 isn't a bigblock but i'll just have to go slow.