I'm thinking about either the Ridetech or Aldan American front coil over systems.

The Ridetech shows the spring rate of 650 pounds with other spring rates available.

The Aldan system shows three spring rates of 550, 650 and 750 pounds.

I know the Marauder has a progressive rate spring. How does it's spring rate compare to these? I run a lot of Auto Cross events and would like a little stiffer spring and the ability to adjust the ride height lower. I'm thinking about the 750 pound springs.

https://adtr.net/product/mercury-mar...ver-system-03/

https://aldanamerican.com/year-make-...icle-year=2003

Any comments or suggestions would be appreciated. if there are other options, please let me know.

Thanks,
Curt