If you are looking for a reasonably priced, plastic pair of car ramps, the Discount Ramps 6009-V2 Plastic Car Service Ramp pack may be just what you need. They have a very low profile and are designed, therefore, with lower profiled sports cars in mind.
The total maximum weight capacity for a pack is 4,400lbs. They are capable of lifting your car to 2.5 inches off the ground. The unique honeycomb-style design allows moisture to escape and avoids building up.