I'm looking for info on drag coilovers and suspension setup, what kind of spring rates and what coilovers I was gonna go with BC at first but after some research found they are actually garbage

 

These cars are designed for road racing and touring car racing, not many people have drag car setups for this platform, what you can do is look up drag suspensions on other cars and try to mimic setups with proper spring rates and valving of shocks