How much does it cost to replace a 2003 Acura RSX engine including labor.?

You can generally find a low mileage engine for this car in the $2,000 and under range and add another $1,000-$1,500 for labor at a decent shop, but less if you know someone that can do it. If the car is under $2,000 then do it, or you can get a RSX- type S engine and spend another $1,000-$2,000 and get 50 more hp out of the deal too. Basically you would have a $7,000-$8,000 RSX type-S with low miles.

Generally, a k20a2 motor (type-s) will run you between 4500-5000, labor won't be too much because it would be a simple job, just dropping in the motor... However, i would suggest getting a k20ar (japan type-r) they're only about 1000 more dollars and you'll get about 25 more HP.

hope this helps!

nope... to push any decent amount of horse power your gonna have to convert to a manual... but for the price of converting it and boosting it, you could just sell it and buy a car thats already built. That would save you time and money.