Wood blocks, planks... Pretty much anything you can get under there. In college I used old text books haha.

Having a low profile jack is a must as well.

 

I received my Midwest Corvette catalog today, the cheapest rollup you can buy is $99= and all the rest were in the $150+ area and up. This makes my $3= 2X6es look even better and they raise SLICK slightly more than 3" just enough to get my 3 ton standard Sears jack under her....Gary

 

Yeah the Harbor Freight brand one is probably the best bang for your buck. It's nice that it's lightweight too. I ended up buying another brand that went lower that was only like $30 more though. Fortunately/unfortunately it's made of steel so it weighs a ton but I can't wait to put it to good use.

 

i have the harbor freight one havent got to put it to use yet though so hope can get under easily.