help for identifying the location of the motor plate

[mabcs]

Good, I hope to find help here I have failed in my Portuguese language, and my apologies for my bad english ...

But let's get down to business, I have opportunity of buying an e36 318is 94-95 that has camshaft, do not know how, but that's what the owner told me, first question, where can I find the label with the engine their caracteristas (where is located) and how to read these data to realize the construction year of the engine, and even now visually distinguish one as a M42B18 M44B19?
from already thank you!

[flyboyx]

tree damaged cams? three damaged cams? at first, i thought this thread was spam. i did actually read it a second time and decided it was more language barrier.....

why don't you copy the vin number down and call the bmw dealership?

[mabcs]

thanks for the help, but I have not seen the car for photos, and I have no way to access the vin, and nothing assures me that it is the original engine that chassis, am I right? sorry for my english