Raising the read suspension
You may not want to change the springs again as you say because even though you only want to raise it an inch but Dave has a very valid point. I ran air shocks on one a long time ago and never raised it much (about 1 to 1-1/2 inches) and it still ripped a upper shock mount loose. Ever try to get up in there to fix one of them??? Real pain in the *** if you know what. I will never ever consider putting air shocks on anything again. No matter what.