It is a 1988, 1.6 SOHC.

You're right again, Gimme. The belt should have snapped or stretched long before to the bolt failed. Today I loosened the head bolts on my 323. They were size 13mm whereas the 323 at the yard has 12mm. Both are 88's. Anyway, I thought I be able to lift-off the three blocks holding down the shaft, but no-can-do. There are five blocks, but only three of which have bearings.

You're also right about outsourcing the project for best (and quickest) results, but if I can't manage this myself, the vehicle will be junked. I should point out I have no emotional attachments to the car and there are no after market goodies.

Highly appreciate your input, dude.

Attaching three scanned pages from the Mazda shop manual. Hope this helps some.

I recently had the experience with my mazda, 1990. But I just think something is too cold and because of that moves badly. I'll try with a new bolt :)