I install the cap auto tubular k member and rack n pionon....if u go with the coil overs u will need to build a suitable shock support since now it bears all the weight, if u chose to run a torsion bar still a shock mount is not required...also rms unit is all in one unit not requiring an welding for a mount, but is a bit heaver,,,unit... give ray at cap a call248 200-8818 he can address any of your question..