As krzys says, not aware of a crv gearbox being plundered for bits. People do use the b20 in civics with a vtec conversion, but not sure if they use the b20 gearbox or something else. Might be worthwhile looking at crv forums to see if anyone's used other b series gears in there crv gearbox... That might point you in the right direction.
Also the tuebo seals aren't great and likely to fail. The manifolds apparently prone to cracking. And parts such as BOV and external waste gates are crap aswell. I've had both eBay specials and we're naff so moved them on. Altho I was considering this route myself. I changed my mind due to bad feedback from others. Also had some good feedback tho so just a risk you will need to weigh up. Especially if car needs to be reliable for work etc. Personally. I sold all my eBay parts and have saved and am now doing the job properly.