I was wondering what was needed to swap an F20b (blue valve cover) into a 2000 Civic Si, also would it be able to fit snug under the stock hood? because i have heard that its similar to the h22 and with the h22's you need a different hood so it will fit, so i have heard(correct me if i am wrong). anyways, any insightful response would be greatly appreciated.

 

Yes, it will be exactly like swapping in an H22. You can run an H22 with a stock hood, just depends on what mounts you get.