yep.. i took the cheap way out and always used some wood to fab up some ramps.I looked up what you are talking about and they just look like normal ramps. I use normal ramps - but I made some step ups out of a 4ft long piece of wood. works great for my z28 and corvettes too.
Just do that prob cost you 15 bux for some wood - and DUH make sure you screw in some support blocks so its actually solid and you just drive up and crack it.