How would I know if my coilovers are adjustable? they were on my car when I bought it, and there is about 3/4 of an inch clearance in the back but I was wondering about the front also. any help?

 

if they are coilovers, they are adjustable. just take off the rim & tire off and look at it. if there is a thing that spins on a threaded sleeve then you can adjust it. go up to make the car higher, down to make it lower.