88 caprice coil spring help

[drbradb1]

Hi a newby here. I want to replace my coil springs on a stock 88 4 dr caprice.. The orignals have 170K. I want to raise the car an inch maybe 1 1/2 Does anyone know the specs to do that or the specs for a 9C1 springs? Any good references as to where to buy the springs and talk to a knowledgeable sales rep? TIA for any help