There have been a few minor issues I've seen on thread engagement using the adaptors, but I haven't seen anyone with that issue in a long time. A lot of people here run the adaptors. And Cass is top notch, if you do encounter any issues just contact him and he'll sort it out.
Also, coil over conversions are a waste of money for most people. You can handle just as well or arguably better with upgraded components for your torsion bar suspension, and do so for significantly less money depending on the set up. The only thing you can accomplish with a coil over conversion that you can't do with a torsion bar set up is a rack and pinion. That's it.
