What year ?

I have a complete drivetrain, but no idea what year. The T-case still has its sticker on it w build date of 1999. I have the numbers (casting and ID's) how do I read them? The engine has no EGR valve either but has a distributor.

have the engine here, Here are some Numbers. Tranny: Model# 30-43LE 5210 4210AB Serial# 97KE712967. Engine: Valvecover- 53011270M2XJ/92708257281852. Block- 53010341 NVH IF 103/97. Not sure what these numbers mean as far as the model year, but I plan on trying to drop this engine into my 89. I would like to use the tranny too, but not sure if the electronics will be the same.