Vibrations

[FRANKENSTEINC10]

Good evening everyone. I am having trouble enjoying my big block swap. I can't seem to get over about 62 mph without feeling like the truck is going to fall apart. I have noticed that when I get over 62 and I let off the gas the truck vibrates and shakes kinda wildly. Also when I am corning to the left at most all speeds I get another vibration. The tires are new, new drive haft and u joints, new shocks in the front (needs rear shocks). Does not have sway bar but they are at the top of the list :-). I have new upper Ball joints that I will be installing next weekend. Anything else that I need to focus my attention on guys?