Cool! Another worthless sr/ka debate! Thought I got rid of this crap when I sold my Sentra! Displacement has no equal. You increase the effective displacement with boost. As far as wether the ka/sr is better, they are built for differnt things. The ka was built for more torque for a heavier car. The sr is built for top end. Sorry but the sr20det block will hold more powere stock than the ka, proven so many times. Dont you think there is a reason Nissan doesnt use the ka for racing? Yes the ka is a good motor but an sr will out do it. sr's have run over 700hp years ago with jun. What makes me laugh is the quest for power. How many people here really need over 250? And yes I have tuned ka's, Had the first Fmax kit for a true DET with over 300hp as a daily driver. Well ill just stick to a 2.8l with the tripples and exhaust, runs good and sounds great. And before I get flamed, I dont care! I was turboing sr's over 10 years ago before some of were even driving!