do the adjustable lca send as much vibration or what ever through the car as the upper ones do.i dont suppose you can replace the hard bushings that come in them for the stop type.all i need them for is to adjust the pinion angle,not for racing.
If all you want to do is adjust the pinion angle, you can do that with just the adjustable upper control arm. From what I have heard is that it is easier to use the UCA since you only have to adjust one point, with adjustable LCAs they both have to be adjusted equally.