Suspension question...

A friend has a '92 300ZX with a whole bunch of racing mods. She bought it with all of the modifications already done and all she knows about the suspension is that it is racing suspension.

The problem is the car, while it's just sitting still is almost sitting on the tires. She has 18" rims on it with racing tires. She said as she is doing highway speeds she can smell rubber burning and when she is on the interstate she can here scrubbing when she goes over bumps. Yes, obivously she is rubbing the tires. Now is there a way she can get the suspension raised up in the back? Would coil overs fix it? I don't know much about the whole import deal, but I was hoping maybe someone on here might.

Thankyou for any help! :toocool:

Air shocks on the back would raise it some but the real problem is the wheels are too big. Get another set of wheels that are closer to what came on it.