they are also not straight drops either, a few modification will be made in order for the motor to fit and sit correctly. dont waste the money, unless you plan to keep this car as a track only monster, get yourself a b16/18/20 they all are good swaps.
You could put a H23 in but its not recommended seeing how it takes more money to do so you should save yourself the time and just purchase a B16, B18, or B20 unless its a track monster.
Check out the full engine swap kits here. http://www.totaljdm.com/?id=40320