i have a question i am looking to buy a 98 blazer 2 door 4 wheel drive that has a bad engine and i have a 4 door 4 wheel drive 99 blazer with a good engine i wanted to know if it will fit no problem and they are both 4.3L

 

Should bolt right in.

 

nothing should make it not bolt right in like the motor mounts

 

The engines are practically identical with the exception of the oil pan which will need to be swapped over.

Knowing that, please stop asking the same question over and over again in separate threads.