Sorry it took so long to get back to you > I have had the springs on for about a year and have wheeled it alot. I think the reason I dont have any sag is that I have the Can Back soft top which took about 200 lbs off the rear. Huge difference in how it handles now.
I trimmed about an inch off all the fenderwells all the way around , simply following the body line that is already there , I also trimmed about 5 inches off the lowest part of the body right behind the rear wheels.