You can look at them on power flex's website. They're not really cheaper, but would be less labor intensive. A little lube and they pop right in. I've been waiting for some one to give feedback on them. I already have the M bushings and upper arms/guide rods, which ever you want to call them. I'd love to hear what an improvement the inner bushings on the lower control arms makes. The outer is already a ball joint, but the inner bushing has a lot of deflection under load. Would be an easy way to get an improvement similar to the 1M/M3, with out swapping to the lower arms and shock/spring style of the 1M/M3. Check them out guys...