New Coilovers with 6 Inch BDS lift

[minotto]

Another question: if I put a 1" spacer over the spring of zone 3" so I get 4" total behind, could I extend the fox 2.5s up to 6" with the threaded collar that is screwed onto the body of the shocks?
Are there any guides to understand how many turns you need to make to get the additional 2" of extension on the body of these fox 2.5 and how many inches does each turn correspond to?
The fox 2.5 measure 4" longer than the stock shocks and have 2" of additional extension that can be adjusted as desired, did I understand correctly or am I making some mistakes?

 

[minotto]

Dear Friends, I would like to know if these coilovers are sold with a 6" calibration 4+2" preload on max extension or out of the box are they 4" long and can be adjusted from 0-2" from myself by turning the body with a wrench? They are some shop where i can buy with calibration of preload to reach 5" in total height to level a BDS kit with 3" rear springs?
I would like to understand if once mounted on the ram I can adjust it myself from 0" to 2" to find the perfect leveling or do I have to disassemble them, remove the spring with the compressor and change their length thanks?