I have run PC on many vehicles and every one of them sucked. Spings on my Jeep sagged after about 6 months. Rust is least of th eworries... all kits rust to a degree. I also had a LCA weld at the bushing break on me. It isn't speculation it is fact... both form my experience and MANY MANY others throughout the offroad community. Your kit is to new to comment on... give it time... I hope it doesn't crap out on you.
Don't take offense to my post... I to thought Pro Comp was "OK" nothing personalt to you... just to ProCrap...