Strengthening rear frame rails for Airbar-2nd gen

[cpd004]

I'm looking to see what you guys do in order to strengthen the rear frame rails on a 2nd gen (or even 1st gen for that matter) when using a Ridetech suspension. My 4 link is stitch welded to the stock frame rails because the bolts kept coming loose. I have noises and flex back there as the car goes over rougher roads. Mostly creaking and the occasional popping.

I've read that welding the airbar can cause the rails to crack. Mine doesn't look cracked anywhere. The flex and noises are aggravating. I'm guessing the only way to correctly solve this and still keep the Ridetech set up is to have new rails welded in from one of the few companies that offer them.

Otherwise, get rid of what is there and go with a different rear suspension set up that doesn't rely on the rails for full support?

Any thought's and experiences on what works and what doesn't would be greatly appreciated.