preludes
92-96 h23 = si = 160hp 151lbs/ft dohc nonvtec
93-95 h22a or h22a1 (obd1) = 190hp usdm 200hp jdm
96+ h22a4 (obd2) = 195 hp usdm
the h22 type s as referred to above is 220ps or 217hp. but cost a hell of a lot to buy. almost not worth it imo.
uhm... drop a h22 in. it bolts up. hell.. if your strapped for cash you can even buy a longblock h22 and run your f series tranny on it.. but i'd recommend getting the whole swap.
and the performance is night and day from a f22b. your talking 145hp and 137lbs/ft or so compared to 200hp and 151-53 lbs/ft depending and of cource the vtec y0.