My 65 is a little squirley?

[ozzyracing]

Any ideas on why my 65 might wander a little? I just got it a few days ago. for the most part it drives straight but every once in a while it wanders a little? Also, it doesn't seem to ride smooth over bumps, could be a little softer? The truck does not bounce like it has bad shocks but I don't know what it is. I have a 454 with a turbo 350 with power steering and manual brakes. I just put on new 295 50 15's all around.

Does it just need and alignment? Or something else?

It is the stock ride height for now, but I will probably do a small drop later, 2/4?

Any info would be great.

Also what about complete A/C units for these trucks?