help where do these bolts go ??????

Hi recently changed the timing chain on my k12 which was done over a periuod of weeks when i had time engine is back in and running fine but oops 2 bolts left over from when i removed engine from car they are about 4 inches long and have hex head which takes a 10 mm spanner i just cannot see where they belong i know its under the bonet somewhere becaus i kept removal bolts and engine bolts seperate anyone have any idea's please
 
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