ft end sits too high with replacement springs. join the club. it might settle a little, but i wouldn't expect more than about 1/2".
i've been trying to figure out why this is, and if anyone has gotten new springs which put their car within ride height specs, let me know where you got them.
the only thing i can think of is they are using camaro specs (same part #s), and the 'bird engine sits further back. shifting the center of gravity. dont know if this would take a car from correct height of about 81/2" at the rocker, to 11" give or take, but it sounds reasonable.