Transmission problems
 

I have a 1994 Astro Van EXT. The transmissions we have the plug in on the transmission do not match. Now can those plugs be changed? Ok now can someone please tell me by these numbers what year this transmission is. No one seems to be able to tells us. Not even Toledo, OH transmission manufactors.

the numbers are: 0867 7064 Toledo, then there is 3chd, 613chdy 09653228. The body is: 8680514 then there's 311 C. It is a 4L60E M30.