This set of 2 Competition Engineering shocks and 2 Pete & Jakes were briefly used on a mock up build from a local racer. I bought a bunch of his cast offs to get some parts I wanted and these were bubble wrapped in a box. They measure approximately 14" o.c. and 10" o.c. to the mounting holes. The 2 CE shocks (part # 02755) are 3 way adjustable and the P & J's are not (part # 2084). Thanks for looking and check out my other stuff as I will be adding more.