Mach 1 HP lowered on dual rates.

[RobZ71LM7]

just do the fronts.

Do you have an idea how much rake there would be? I'm considering doing fronts only and keeping my HP rear springs. Looks like my HP rears are 742#. I have Steeda camber plates up front and was debating doing front Steeda DR's and using their 1/8 or 1/4" spacer to negate the front drop.

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[shogun32]

sounds like a reasonable plan to me. start with 1/4" preload spacers.
drop it onto the ground and bounce the front a couple times by hand and you should be able to quickly ascertain if the the results (visually) are to your liking. If not, hit the UP button on the lift.

Also I don't think it's strictly speaking necessary to stack those plates. ie, you can use say AL rounds around 1" dia between the base plate and one of the shim plates (against the sheetmetal). That way you can play with 1/2" or perhaps more.