Tubular lower control arms

[Major86]

I currently run factory control arms on my 86 c10. Up front it has belltech drop spindles, belltech lowering springs and nitro drop shocks. Overall the truck is lowered about 6/8 and I love the stance. I have 15x7" rallys up front and even though I ground down the lower control arms some, they will occasionally rub the inside of my tires if I hit a bump in a curve. For that reason, I am looking at replacing the factory lower control arms with tubular control arms. My question is this: 1. Has anyone done this and can you give me advice from experience and 2. Will the tubular lower control arms lower my truck more? I don't have a problem with tires rubbing inner fender and I don't want that problem. Thanks in advance for the help.