85snowdog

I got some more pics to either help or confuse . Hopefully help 
These tags are on the 350 engine   , 
Pump
 

Turbo     Looks like the model is S4A-008  

and these tags are on the 300
pump

 
Turbo   Looks like it may say  the model is S3A 009
 

I noticed the tag on the block of the 350 says initial injection timing is 20 and the tag on the pump said the same . And the tag for the 300 said 21 and that was on the 300 pump.