Spring advice

I need some advice on spring selection. I have replaced the shocks on my '94 with bilstein HDs and installed Tien S tech springs. I have been happy with the performance and stance of this setup until now....

Last Sunday at the NTAXs event I had another person in the car with my big ass and we were pretty consistently bottoming the suspension. I plan to do some track days this year and will have instructors in the car. I think a higher spring rate is called for. I have been looking at Eibach and FM springs but I can't find the spring rates for the Eibach springs.

Anybody out there know the spring rates or have recommendations for a heavier spring? I don't want to spend the money on a compete suspension swap

Ground Control coilovers? Pick your spring rate, set your ride height. If you're not going to buy a matched spring/shock combo, then I think GCs are a much better option than any off-the-shelf lowering springs.

if u don't want to switch to 2.5" springs and coilover sleeves, I would go with the FM springs. I have them with R pack Bilsteins, they are the stiffest (318/233)OEM size aftermarket springs. The mild drop also gives you more travel.

I am experiencing with ebay coilovers with new bilstein HDs. Just using the sleeves from the kits.