Try the local Lumber store. Use 2X10's as base material and 2X4's, 2X6's or 2X10's for the wedges.
Determine the elevation you want on the car, cut the lumber and create the pile. Next Lag screw them together. Then align the tire on the pile to get the center. Make sure the car's weight is on the tire when placed on pile, and as with any jacking operation chock the other tires for safety)
Next add the 2x4 wedges (chocks) that you have cut and hammer them tight. Mark the locations. Remove the wedges and the pile from the car. Lag screw the wedges onto the pile where you marked them.
Prime the wood. Finally Paint the entire pile assembly the color you want to match the other display materials. You are all done. I think I have about $75.00 in materials in all four pictured here when I did them, and the best part is that you can make them higher if you want later.
Tools you will need - a Good radial arm saw, Lag screws, primer-paint and brushes.
Phil
