You can do it ether way, on the ground is probably better, as it gives the tires more resistance. You will want to raise it to do your repairs thou.
If you don't make mistakes. your not doing anything.
69 SS/RS full custom Camaro 98 ISCA Grand Champion
69 SS/RS BB Camaro wifes driver
66 Elcamino 350/all dz parts,ac,windows,loaded,my driver
69 SS Chevelle BB conv.fresh frame off
26 T sedan street rod