Easy to do took 45min to cut and build. Cost $50 bucks wood, glue and screws. They are heavy but I'm keeping them nearby so I don't have to move em too far. I may even paint them. 4 pieces of wood 2x10's, base 78" next 60" next 42" and top 24" plenty of wiggle room for chocks or just plenty of room knowing your on the top. I have used rhino ramps and they are relatively cheap but will not work with our nismos. Even building an extension onto the rhino ramps won't work, they touch. So I figured why not with a couple more pieces of wood. The great thing about these that no other ramp that you can purchase can offer is the STEPS. You don't need someone to spot you or use a mirror and try to work all that to figure out your on the top or guessing how much more... You feel step 1,2,3 and you know you're on the top. Really cool.
Ramp issue solved.