Ok, Say i have an 200,000miles civic lx. and then i have an civic lx engine thats 130,000. and if i were to take the engine head and replace the 200,000mile civic with the engine head of the 130,000 mile. Would that make a difference? or would it still be an 200,000 mile civic.

 

no change
the 200k mile engine could be in better condition than the 130k one. not to mention the bottom end of the engine is more important than the condition of the head.

 

It would be a 200,000 mile civic with a 130,000 mile head...