Hi chaps, I have looked at these porsche jacks before but with that raised oval how do you jack up the front cross member safely. Cheers paul.
I built mine up to level using some hard rubber sheet (thanks to Stewart S for the tip

).
Cut the oval shape from the centre of 1 (or possibly 2) sheets of hard rubber sheet and glue securely to the top of the base.
This is very secure and has the added advantage of a built in pad to protect the crossmember.....
James