Drop a b18c1 into a 93 civic cx h/b.
add: i/h/e/test pipe/cams/clutch/lightened flywheel/vtec controller
strip ur interior (back seats, spare tire, passenger seat, side trimming etc)
lower ur tire pressure to around 22-24psi.
know how to drive, an u could hit high 13's w/ that set-up.
OR
Do an ls/vtec set-up (still in the 93 h/b) w/ the same things an run closer to mid 13's.
OR
drop an H22A w/ only simple bolt-ons an ur lookin at 13 second passes.
OR
Drop a b18b w/ simple bolts an turbo it to 10-12 psi in that same car. u'd be looking at mid-low 13's easy then...