Ive never heard of a sohc vtec f22a. go with the f22b for the extra cam. boost is very ideal for both motors. f22b are also oil starvation motors. Take that into considration. The f22a u r talking about comes out of a 90 93 accord and the f22b is the replacement motor for the h23 in 92-96 preludes. I would go with the F22b for sure!!