People who know what they're talking about tend to want an SR swap over a KA because its light weight in comparison, being all aluminum. This has its advantages in racing applications, but when it comes to daily driving, the KA can handle low boost stock and still make good horsepower and torque on a budget. With a KA you can do a junkyard turbo build with mild boost and decent numbers for half the price of an SR swap, but some people argue that having an all aluminum 4 cylinder that can already handle more boost is the way to go. Both engines have their strong suits, whether it be reliability, horsepower, or budget. Though the SR20DET would be the smarter choice for track racing, in the end it comes to to personal preference: which do you have the $ and the time for?