i made one with wood and it was very stable and easy to move around.
i used 3/4 inch plywood on the front, i cut them in a triangular fashion and used the torsion tube bolts to fasten them to the car.. i thien cut down some 4x4's so that they would fit into the shock housing and cut them on the angle against the plywood, i then fastened some large wheels from harbor freight.
i the back i used a 2 x6 across the car with teh 4x4 in ths shock housing, i connected the frpm and back with 1 x3 for stability,
used it to move the car for sand blasting on a trailer
then to the painter
then back to the garage and nothing broke.
the plywood was cut in trai