Before buying springs it would be helpful to have a definition of what is "stock" ride height and were does someone measure it?Both EBs I purchased new and the used one all had 4900lb.GVW packages that have a nose down stance with the front 2 1/2"+ lower than the rear.This is an effort to raise the front end to about 1/2"to1" lower to than the rear,a stance I prefer. Venders offer "stock" and 2 1/2" rear leafs. How do these compare to the 4900GVW rear sprngs ?What front coils give an appropriate stance with either rear leaf? I don't want the rear any higher than the factory 4900 GVW springs. I think I need to install the more expensive 10 or 11 leaf rears first, then decide on front coils.I'm sure all this has been covered but I need a step by step approach to this problem hat won't require returning sets of springs in a trial and error process.