I've got a pair of the heavy duty jobbers (from BD, I'm pretty certain)
but I found that still needed a PVC strut lock thingie* to keep the hatch
and bike in the air.**

    * Stupid Vanagon Trick:  3/4" PVC pipe cut to 8", rides the strut as
you lift the hatch, then locks into place.

    ** Not responsible for bent and twisted struts if/when stupid Vanagon
owner attempts to force the hatch back down using brute strength before
freeing strut lock thingie first.

Geo/ATL