FWIW..... He's joking on the core support..... I can see the thread now..... Pretty much just make sure u don't pinch any thing and you will be ok. Be sure not to put the stands under the control arms if ur planing on doing any type of spring or strut work. Could make the car fall off and hurt someone.
I just put them under my header collectors But really i use the control arms(where they meat the k-member)