I want to find out more on my investment so I know the directions to travel with restoring it completely. I believe this truck is completely original so what's the difference between the motors as it's seems everyone wants to know what they have but nothing as which is better or worse.. Is there a way to see if number match? Does it increase value? I'm new so forgive me for my ignorance.

Casting Number - 3835849 which says 216 and for my year truck


Serial Number from behind distributor I cannot find anything matching this, LBMI95232

Let me know, thanks for the help!