To find out if this is possible, what we'd need to know is just how related are teh f20b and f20c. Are teh mounts the same? Do the trannies mate? ect...if it is just a f20b with a different head, higher comp ratio, and rotated 90 degrees then it should fit. Only problem i see is you may need a custom header. the s2000 header wouldnt work and the f20b may not mate up to the head. If i could do it i would. I dont have $$$ layin around..