Lowering springs and clearance

[UTGT]

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I have an 03 gt 5 speed and i just installed BBK Lts and an offroad h pipe. I want to lower the car but I'm worried about how close the collecters are to the ground already. I was thinking about the eibach pro or steeda sport kit but 1.5in seems like a lot when you look under the car at the clearance>

[roach]

take a look at some h&r springs