Just a note about the Posies springs since they were mentioned. Their front springs are reverse eyed and are advertised to be a 1" drop. In reality, they're likely not going to be any drop at all from where you're at now if your springs are old. At least not until they also start sagging. I bought some to replace mine because my stock springs were worn completely through the bushings and into the eye metal. They were about the same height as my worn stock springs.
The Posies rear springs are supposed to be a 3" drop, but again, if yours are worn, they might only be 1 or 2" from where you're at now. I'm not sure about the frame on your truck, but on my '36 there is a ton of room for rear end clearance without the need to notch the frame. My truck was lowered 3" (front and rear) and I still had plenty of clearance in the back. (front is dropped axle). I just took off the top load springs. Never bottomed out on me, and my truck doesn't even have shocks, just the springs (that is gonna change).
Ride quality to me is fine, but I am not planning to ever haul a load.
