Love the Bilsteins! I plan on running them on my 73. On my 11 I went from Stock shocks, to fox when I leveled, Blew the front ones in 3k miles. Installed Bilstein 5100's, shortly after Rancho came out with their 7000 series designed to compete with the Bilstein 5100's. They sent me set to try out, I ran them for a few months then went right back to the Bilsteins.