Not sure if this has been asked before but I'm building kind of a no f#cks given drift missile truck and was wondering how much doing a spring under axle conversion will lower my rear end I have a 97 2wd f150 thanks for any advice

 

The width of the axle, spring pack and perch. If I had to guess I'd go with about 4"

 

Thanks man, I appreciate it. Also thinking about cutting my coils any idea how cut equals how much drop? I've heard a full coil is about 2 inch but not sure.