Kyrasis6
+1y
Holley 5200 Conversion
Weber Installation
On top of the adapter plate you will also need an air breather for the Weber 32/36, it is best to get the 2.5" tall element. The throttle linkage you will have to get creative on as there is no bolt on kit. Just from looking at your picture you need to back out your idle screw about 10 turns, if you try to start it where it is set right now it will be idling at like three grand.
Any other questions you can drop a post on the mazdatruckin forum others have done that exact same swap. I got mine off of a VW so my linkage setup is a bit different.