I am sure that this has been brought up before but does the NSX engine drop in the S2k? I know that the NSX engine is quite larger but there seems to be room and I am just curious if this has been done before..

 

yup, its been discussed before.
no it doesn't.

the nsx engine is a mid-engine configuration - to get it to work in the S2000, you'd have to extend the body an inch or two (that's my guess), create your own custom bellhosing and fit a transmission that would hold the power and work to the rear instead of having a transverse tranny hooked up to the rear end.

more comments here:
https://www.s2ki.com/forums/showthread.php?...NSX+engine+swap