I'm looking for recommendations for front spring rates on my '68 442. Car is equipped with a 455, factory A/C and a turbo 400.

I want to keep static height to be no higher than stock.

Has anyone used the aftermarket springs that lower the height approximately 2 inches? Any issues? The car has 255/60-15 rear and 215/65-15 front tires.

Thanks for your input.