How much does a 2.5/4 drop help handling?

[cjohnson6772]

I really want to improve the handling of my truck. I've got a factory front sway bar. I've got an Iroc bar for the rear but after reading in the suspension forum here I don't think I will use it. I've read the camaro bar is too much for the rear and can hurt handling.

So what else can I do to improve to handling? I'm not really big into dropped trucks. I have been considering 2.5/4 drop just to improve to stance a bit and lower the center of gravity. So my question is this: How much will a 2.5/4 drop improve handling and reduce body roll? Will the drop adversely affect ride quality? I am running 275/60R15 tires. Are there any foreseeable issues with this combo? The truck is a '72 shortbed.