Manual have more better gear ratio some comes with LSD. Auto b16a have milder camshaft and lower rpm gear change. U can use manual cam or type r cam and piston with ur auto b16a for better acceleration but performance still cant compare to a stock b16a manual.
I suggest if u wanna keep auto just change to b20b/b20z block with some bolt on mod. If u want power and reliable then go for b16b or b18cr halfcut comfirm puas!
When I was in high school, my best friend's elder brother and his group of friends were into Honda EGs, EKs etc and from time to time used to give us advice, pearls of wisdom really and cars and such. At the time, we...