A complete front end bushing kit is like $50 from the vendors, I am ordering one for a recent 66 I got. It might not need all of them, but I'll do it this winter so I know what I have and that they are good.
That little 6 is pushing some big tires, adding power steering will rob a little power.
I have a 66 with the 170, on wide 31s, seems like a good enough combo, I need to drive it more to tell. I don't think I'd add power steering as she needs the power she has, but I don't have 35s.
The V8 swap requires new engine mounts welded onto the frame, and some drivetrain issues as the 6cyl adapter is a different length for the transfer case, so you have to get the trans/transfer case lined back up.
You can research bigger 6 cyl swaps. A 200 is a drop in, and a 250 is almost drop in, and that is a lot more cubic inches with good torque. I ran across a 250 for cheap so I grabbed it, it can sit while I plan what I want to do, but I really like driving a 6 cylinder Bronco (but I have a 69 with a V8 that I can play with too).
