Nah it wasn't bad at all for me, you could probably even adjust that out of the track bar to push it over enough so it wouldn't hit, but I didn't feel like it at the time.
While I have no regrets with going with the RC longarm kit, there are things I dislike about it. For one, the front crossmember is a huge PITA, it's gigantic, and one piece. If I ever have remove it for whatever reason, I won't be putting it back on, I'll build a better one. Most other kits are a three piece design so you can take just the center out for transmission work. The rear is also a 4-link with panhard bar (or 5 link, whatever you choose to call it), which flexes quite well, but if you want a triangulated 4-link to eliminate the track bar, that rules out this kit as an option. The build quality is fine, the arms are nice, the brackets are solid, but the smaller upper-control arm flex joints have a habit of popping out the retaining clips. One quick call to RC and no questions asked, they shipped me a new set. Have had no issues with the larger, lower joints as of yet. Most people also don't like the track bar relocation bracket in the rear, and would prefer an adjustable bar instead, but you get what you pay for. Does not include extended brake lines... You really should have them with this kit. There's probably more I'm missing, but that's my honest review of the kit so far. Maybe I'll write up a full review at some point with all the pros/cons.
Would I personally buy the kit again? No. I'd put more money into a different kit with more features that I would like to see. Is it a cost-effective way to go long-arms and does it perform decently well? Yes, of course. And it's held up to my build on full-widths and 38's so far without much carnage. So factor that into your decision making!
And thanks for the comments on my rig! Been a long build, and still plenty of stuff to do to get it where I want it! All part of the fun... Haha