Need help picking new front coil springs 67 camaro

[cw67]

I recently bought the stage 2 plus from SC&C along with the lower a arms. I was running qa1 coil overs, but these are definitly not going to work. I have them cranked up and it is still to low and coil binding. Mark said to use the shock and buy conventional coil springs w/ a 1" drop and then use his spacers to fine tune the height. I agree, just can't decide on a spring. Global West is the only one that i've found that has a 1" drop and is a linear rate. I heard Hochkis doesn't quite fit the lower a arm.(a little bigger o.d.)It seems everyone advertises 2" drop. I am thinking around 500-550 spring rate. the car is mainly a street driven show car, ocasional drag stripp. I have a 25" o.d. front tire and still have 15" rims. Just wondering if anyone has this setup and what springs you are using for a lower stance.
Thanks,
Chris