pics of my project and sanden question

ill take some more tomorrow
now question what series sanden do the mazdas use from factory is it the 508??
is there any others that are comparable for mounting?

Nice truck! There is a write up in the tech write ups by members section on this.

Id just go to a junk yard and ask them for the a/c compressor for your year and model trucj. It should be a sanden 508 or 708 with ears in each corner.