Yep, b20 is from a crv. It will fit with b-series ef engine mounts from www.hmotorsonline.com [correct me if i'm wrong. The turbo will be shoehorned in there tho. Your turbo setup will depend on what kind of racing you are doing.

For your tranny, I'd recommend a tranny from a non-vtec teg. Stay away from gsr/si/type-r trannys because their gearing is too short, imo. You might want to get an LSD or welded No-SD depending on what kind of driving you're going to do.