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Not sure what the specs on the actually coil-over, but the coils are read as:
62 250 04.5
62mm DIA (close to std 2.5" coils used by other manufacturers designs)
250mm length (about 9.84", std Pedders XAs use 180mm or 7")
04.5kg or 252lbs spring rate (std Pedders XAs use 8kg or 448lbs)
Forgive me but this may be a stupid question, but did you roll the vehicle to reset the suspension after dropping it to the ground?
I've tried 150lbs(10"), 250lbs(8"), 325lbs(8"), and 560lbs(?") springs on my front. Everything under 8kg(7") dropped the vehicle height where I needed to raise it to get it back to the same 1" drop with the 8kg spring. My car weighs 4300 lbs w/driver and has a KB 2.8. My Pedders XA may be different design from yours. I'm sure Lingenfelter would provide info info for you.
Try giving Lingenfelter a call.
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