i dont understand this properly, am i right in thinking that i should use the cars scissor jack under the four marked sections on the sills but these may crush and give way? or i could use a trolley jack with a block of soft wood under the front raised humps or rear raised humps but these also may crush? im not sure how to jack the car up using the front subframe or rear beam could someone clear up this for me please, thanks. i can see the front raised humps but im not sure where these raised humps are at the rear, any pics available? thanks