At my son's work with the Saturn. I like his ramps.

No more shin knocking on the bumper

And the center sections come out for easy access.

They are nade out of high density foam. There appears to be some sort of plates attached to the foam on the tops and sides. Then appears to have some sort Rhino liner sprayed all over it. My back is happy.

I wonder if those will hold a 9,000-pound Cummins? 

They do puts trucks and vans on them to wrap them. I will see if my son has the weight rating on them.

Printed on the undrside. Of each piece is a weight limit of 1500 pounds per block for 6000 pound max rating. So no Cummins.  They were a godsend on that little car. But lets not forget a cocrete floor and AC. OH YEAH!!!!!

Those are nice, would be really handy working on my car.