i jsut bought a 1992 civic lx and it has a cracked head. i was wondering if i could use the b21a1 that i have layin round and drop the whole engine in the car. by the way that is the engine that was used for the 1990 honda prelude si(waht i drive now). i would also like to know what i would need to buy/make to make it fit in there. i am posting it here b/c i wanted to know what kind of mods i would have to do

 

it would be difficult to wire, and lots of fabrication would be involved in properly mountin the engine in the engine bay. the prelude engines have a different tilt on them than civic engines, even the old B series from the ludes.... your best bet is gonna be a b16 or b18, the B21 is useles in anything other than an old school lude