yes this is true, unless you take wreckers prices for them, over 200 for one that is 'a bit smokey'
4ac's are definately not on the same level as daewoo engines, I would like to see a daewoo pull close to 400,000 without the motor ever being touched. seeing as 4ac powered anything dosent have a cat these no cat back exhaust if you mean from where it joins near the front muffeler that wont do squat, for the extra few $ get a full exhaust with a freeer flowing sport muffeler. also a 23/36 carb is a big upgrade over the stocko item.
I have a full (was full until resently) exhaust 2- 2 1/4. it helped to open up the top end. I think al in all it's probaly best just to go with the stock mani.
