I would suggest contacting Laughlin to get their spring dimensional spec that are built into the chassis such as stock style 5.5" or coil over style 2.5" as well as the preferred height; (864) 963-6022. With that info, then a call to Ridetech to see what products are compatible with the physical layout of your chassis.

I wouldn't be concerned with using a bag set up on a streetable track day car. The Ridetech systems are pretty advanced now and will allow not only just ride height adjustments but can be dialed in with various spring rates from the driver's seat while underway.