Quote Originally Posted by matt.p View Post
Appart from engine number qt and 11qt what are the differences in engines? Nothing

What problems could i encounter by putting an 11qt engine in my car with pre pollution and a neoprene rear main seal?
dunno!!!! What model car do you have?
Assuming you have a HX or HZ the only problem you may have is trying to register a pollution model with a pre-pollution engine.