Ive done another crawl under the engine and did not find any numbers on the block under the centre two plugs, there is nothing there. I did find a few numbers on the block, near the oil filter "w" ... 9C11 and 31 D11. Other numbers on the exhaust manifold also ..C or 0 (not sure ) 5TE-9431 F20. I also removed the starter and found no numbers behind or beside it. I did find two threaded holes in to the block about an inch above the oil pan and a third hole with a plug in it higher that the first two. Thanks again for the replys
grease to the armpits and drippin in sweat