Replacing Freeze Plugs

[Hrududu]

Quick question. I am planning on replacing the freeze plug(s) on the back of my engine tommorrow. That being the ones behind the transmission. One is leaking. Does anyone know what size they are and how many are back there?

[g72s20]

These from the Nissan engine manual for L20A to the L28 series shows one big one in the rear of the block, that's it above the crank .......behind the flywheel (that isn't there), and another in the rear of the head, identified in the pic by the number 10. No sizes given but the parts book has the number 35 beside the description of the one for the rear of the head.

Regards,

Jim.