I've lowered my '64 years ago using a spring kit with out any negative consequences. If anything, it rides and handles a whole lot better. Granted, I didn't drop it to the ground, just 4 inches. It put it's stance and ride heighth where it should be. Also, it aligns up just fine. Just a matter of taste whether you want to drive an old school truck or moderize it for better handling. I personally believe a truck with a lower center of gravity with wider tires on the ground and fresh suspension parts to go with the springs would be safer on the road, not more dangerous.
Also just my opinion gathered through years of experience,
Scott
