the BB chevy dropped springs may be what you're looking for.
there have been instances both here and on the camarotech forums of moog and other springs which were supposed to be correct bringing up the front too high. you probably wont have that problem with dropped springs. there are springs available with adjustable heights. i have seen some camaro pictures with moog cs6308 springs. they look pretty good. i used cs6312, i think, and if i cut off a coil or 2 with my 6cy they might sit right.
i think some 'bird lovers here had good luck with ames springs. i dont know from dropped springs tho'.