Gearbox To Engine Bolt Size

[surrey_100e]

Hi Guys,
What size are the bolts that bolt the engine to the gearbox on the t5 block. The thread is in the engine block as per the photo below.
http://i43.tinypic.com/rletyq.jpg

[smithy]

Hi Guys,
What size are the bolts that bolt the engine to the gearbox on the t5 block. The thread is in the engine block as per the photo below.
http://i43.tinypic.com/rletyq.jpg

they have a 14mm head but the bolt have a larger thread .i got some 17mm bolts because 2 of the volvo ones were missing same thread.