I recall seeing a thread where someone was searching for an engine, but I can't locate it anymore.

I decided to create a new thread in case the original poster is still looking. For transparency, I have no affiliation with this engine or seller.

https://www.racecarsdirect.com/Advert/Details/160943/honda-s2000-f20c-engine-and-gearbox

 

super low price if the gearbox is good. Has been modified for sure given the obvious (ITBs) so a buyer should try to find out a lot more about what was done inside the motor if anything.