Setting Up Cam Gears For A 2.4L

[blageo23]

OK, Im getting confused. I was told that all you would have to do is take your stock cam gears to someone with 2.4 cam gears and you line up the dowels and make a mark on the 2.0 cams where the 2.4 mark is at. Is this incorrect?

So if that is correct couldnt I take my aftermarket cams for a 2.0 to someone with cams from a 2.4 and match them up and make a mark on the aftermarket cams are where the mark is on the 2.4l cams?