I have just changed the timing belts on my 308GTBi. Do the front cams have timing marks on them like the rear ones do? Is there a way to verify that I have the front belts on at the correct location? It is easy to verify that the rear cam is timed correctly on the rear bank. Just look through the oil filler hole at TDC. Is there a similar way to do it on the front bank? Or can it be be verified by removing the front valve cover? I just want to check everything before I put it all back together.