recieved your PM. My name is Steve. Do you have all the 4bbl linkage or do you need it all. The parts that will fit a 904 trans in an a-body will be from an F-body 318-360 police car or any f-body 4bbl car with 904 trans and 3 piece linkage. All late a-body 4bbl cars came with 727's from the factory. The trans linkage is different for a 727 compared to a 904.
If it is only the throttle bracket you need and you are using a manual valve body . I have a bracket. Otherwise I only have 727 style linkage and it is not cheap because they are factory 340 parts.
There are some after market cable assemblies available if you just want it to work correctly. That is the route I would go if you are not restoring anoriginal 340 car. Steve
