Best thing to do is to measure the actual droop of a frt/rear wheel setup and then measure the compression of a frt/rear [generally the same side] to get a more accurate measurement. This way you're not guessing and wasting time, energy, and money to do it wrong.
this makes for a good guide on the process.
http://www.fourwheeler.com/how-to/su...re-for-shocks/
The check your fav shock company, Fox, Rancho, Bilstien, VID.., etc for applications and dont forget to mention whether its a stem or an eye-bolt for the top of the fronts. They'll generally spend some time with you on the application aspects.
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BTW, when making a post, you generally only need to post it in one, and the appropriate forum.