I got the engine vin number. The block year is 1997.
Buster28, according to your message, the block has 58 teeth.
We have a small issue with the inlet manifold which is a bit wider. In fact, a member of the forum had already said that block is smaller in previous 98. we decided to make a small modifications of the feet of the inlet manifold so that it can arise correctly. An aluminum welder will help us to solve this problem.
If someone has an another idea, I will appreciate to share this with me.